Trial Outcomes & Findings for The Effect of Brimonidine (NCT NCT03959176)

NCT ID: NCT03959176

Last Updated: 2024-02-01

Results Overview

To observe how differing the sequence of administration of Tropicamide 1%/Phenylephrine 2.5% and Brimonidine 0.2% influences intraocular pressure.

Recruitment status

COMPLETED

Study phase

PHASE4

Target enrollment

13 participants

Primary outcome timeframe

Baseline (Pre drop administration)

Results posted on

2024-02-01

Participant Flow

Unit of analysis: Eyes

Participant milestones

Participant milestones
Measure
Group 1
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye in both study arms Tropicamide: 1 drop administered at two different times points in both eyes in both study arms Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both eyes in both study arms
Group 2
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye in both study arms Tropicamide: 1 drop administered at two different times points in both eyes in both study arms Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both eyes in both study arms
First Eye Exam
STARTED
7 7
6 6
First Eye Exam
COMPLETED
7 7
6 6
First Eye Exam
NOT COMPLETED
0 0
0 0
Opposite Eye Exam
STARTED
7 7
6 6
Opposite Eye Exam
COMPLETED
7 7
6 6
Opposite Eye Exam
NOT COMPLETED
0 0
0 0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

The Effect of Brimonidine

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Group 1
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye in both study arms Tropicamide: 1 drop administered at two different times points in both eyes in both study arms Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both eyes in both study arms
Group 2
n=6 Participants
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye in both study arms Tropicamide: 1 drop administered at two different times points in both eyes in both study arms Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both eyes in both study arms
Total
n=13 Participants
Total of all reporting groups
Age, Continuous
22.8 years
STANDARD_DEVIATION .7 • n=99 Participants
23.7 years
STANDARD_DEVIATION 1.5 • n=107 Participants
23.25 years
STANDARD_DEVIATION .64 • n=206 Participants
Sex: Female, Male
Female
4 Participants
n=99 Participants
2 Participants
n=107 Participants
6 Participants
n=206 Participants
Sex: Female, Male
Male
3 Participants
n=99 Participants
4 Participants
n=107 Participants
7 Participants
n=206 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Asian
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
White
7 Participants
n=99 Participants
6 Participants
n=107 Participants
13 Participants
n=206 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
Region of Enrollment
United States
7 participants
n=99 Participants
6 participants
n=107 Participants
13 participants
n=206 Participants

PRIMARY outcome

Timeframe: Baseline (Pre drop administration)

To observe how differing the sequence of administration of Tropicamide 1%/Phenylephrine 2.5% and Brimonidine 0.2% influences intraocular pressure.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Intraocular Pressure
15.4 millimeters of mercury (mmHg)
Standard Deviation 2.4
16.3 millimeters of mercury (mmHg)
Standard Deviation 2.4
16.5 millimeters of mercury (mmHg)
Standard Deviation 1.5
16.7 millimeters of mercury (mmHg)
Standard Deviation 1.3

PRIMARY outcome

Timeframe: 15 minutes post drop administration

To observe how differing the sequence of administration of Tropicamide 1%/Phenylephrine 2.5% and Brimonidine 0.2% influences intraocular pressure.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Intraocular Pressure
15.3 mmHg
Standard Deviation 2.0
13.1 mmHg
Standard Deviation 1.5
13.5 mmHg
Standard Deviation 1.7
15.0 mmHg
Standard Deviation 1.2

PRIMARY outcome

Timeframe: 30 minutes post drop administration

To observe how differing the sequence of administration of Tropicamide 1%/Phenylephrine 2.5% and Brimonidine 0.2% influences intraocular pressure.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Participants
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Participants
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Participants
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Intraocular Pressure
14.6 mmHg
Standard Deviation 1.7
12.3 mmHg
Standard Deviation 1.5
14.3 mmHg
Standard Deviation 1.8
14.8 mmHg
Standard Deviation 1.4

PRIMARY outcome

Timeframe: 1 hour post drop administration

To observe how differing the sequence of administration of Tropicamide 1%/Phenylephrine 2.5% and Brimonidine 0.2% influences intraocular pressure.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Intraocular Pressure
15.1 mmHg
Standard Deviation 2.0
12.4 mmHg
Standard Deviation 1.8
13.5 mmHg
Standard Deviation 2.0
13.2 mmHg
Standard Deviation 1.9

PRIMARY outcome

Timeframe: 2 hour post drop administration

To observe how differing the sequence of administration of Tropicamide 1%/Phenylephrine 2.5% and Brimonidine 0.2% influences intraocular pressure.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Intraocular Pressure
14.3 mmHg
Standard Deviation 1.7
11.9 mmHg
Standard Deviation 1.4
12.7 mmHg
Standard Deviation 1.0
14.2 mmHg
Standard Deviation 1.3

PRIMARY outcome

Timeframe: 4 hour post drop administration

To observe how differing the sequence of administration of Tropicamide 1%/Phenylephrine 2.5% and Brimonidine 0.2% influences intraocular pressure.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Intraocular Pressure
12.4 mmHg
Standard Deviation 1.7
9.3 mmHg
Standard Deviation 1.3
11.0 mmHg
Standard Deviation 1.2
13.7 mmHg
Standard Deviation 1.8

SECONDARY outcome

Timeframe: Baseline (Pre drop administration)

Pupil size measurement

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Size
3.7 millimeter (mm)
Standard Deviation .4
3.7 millimeter (mm)
Standard Deviation .4
4.1 millimeter (mm)
Standard Deviation .4
4.1 millimeter (mm)
Standard Deviation .4

SECONDARY outcome

Timeframe: 15 minutes post drop administration

Pupil size measurement.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Size
7.9 mm
Standard Deviation .4
8.6 mm
Standard Deviation .3
7.6 mm
Standard Deviation .4
7.9 mm
Standard Deviation .3

SECONDARY outcome

Timeframe: 30 minutes post drop administration

Pupil size measurement

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Size
8.3 mm
Standard Deviation .4
9.6 mm
Standard Deviation .2
8.1 mm
Standard Deviation .4
8.8 mm
Standard Deviation .4

SECONDARY outcome

Timeframe: 1 hour post drop administration

Pupil size measurement.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Size
8.9 mm
Standard Deviation .3
8.9 mm
Standard Deviation .3
8.3 mm
Standard Deviation .4
9.1 mm
Standard Deviation .2

SECONDARY outcome

Timeframe: 2 hours post drop administration

Pupil size measurement.

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Size
8.7 mm
Standard Deviation .3
8.7 mm
Standard Deviation .3
7.8 mm
Standard Deviation .5
8.6 mm
Standard Deviation .3

SECONDARY outcome

Timeframe: 4 hours post drop administration

Pupil size measurement

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Eyes
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=7 Eyes
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
n=6 Eyes
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
n=6 Eyes
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Size
7.6 mm
Standard Deviation .4
7.6 mm
Standard Deviation .4
6.7 mm
Standard Deviation .5
7.6 mm
Standard Deviation .7

SECONDARY outcome

Timeframe: Baseline (Pre drop administration)

Population: Data only collected for Right Eye in each group.

Pupil reaction to light will be measured as none (0), poor (1) or brisk (2).

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=6 Participants
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Reaction to Light
2 score on a scale
Standard Deviation 0
2 score on a scale
Standard Deviation 0

SECONDARY outcome

Timeframe: 15 minutes post drop administration

Population: Data only collected for Right Eye in each group.

Pupil reaction to light will be measured as none (0), poor (1) or brisk (2).

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=6 Participants
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Reaction to Light
0 score on a scale
Standard Deviation 0
0 score on a scale
Standard Deviation 0

SECONDARY outcome

Timeframe: 30 minutes post drop administration

Population: Data only collected for Right Eye in each group.

Pupil reaction to light will be measured as none (0), poor (1) or brisk (2).

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=6 Participants
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Reaction to Light
0 score on a scale
Standard Deviation 0
0 score on a scale
Standard Deviation 0

SECONDARY outcome

Timeframe: 1 hour post drop administration

Population: Data only collected for Right Eye in each group.

Pupil reaction to light will be measured as none (0), poor (1) or brisk (2).

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=6 Participants
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Reaction to Light
0 score on a scale
Standard Deviation 0
0 score on a scale
Standard Deviation 0

SECONDARY outcome

Timeframe: 2 hours post drop administration

Population: Data only collected for Right Eye in each group.

Pupil reaction to light will be measured as none (0), poor (1) or brisk (2).

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=6 Participants
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Reaction to Light
0 score on a scale
Standard Deviation 0
0 score on a scale
Standard Deviation 0

SECONDARY outcome

Timeframe: 4 hours post drop administration

Population: Data only collected for Right Eye in each group.

Pupil reaction to light will be measured as none (0), poor (1) or brisk (2).

Outcome measures

Outcome measures
Measure
Group 1 Right Eye
n=7 Participants
The right eye will receive a sham drop followed by 1 drop of Tropicamide 1%/Phenylephrine 2.5% five minutes after the sham drop is administered. A one minute wait will occur followed by a second drop of Tropicamide 1%/Phenylephrine 2.5%. Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 1 Left Eye
n=6 Participants
The left eye will receive 2 drops of Brimonidine 0.2% followed by a five minute wait time. One drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a one minute wait time. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both left and right eyes Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both left and right eyes
Group 2 Right Eye
The right eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will be administered followed by a 15 second wait after which a sham drop will be administered. Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points in both the left and right eyes.
Group 2 Left Eye
The left eye will receive 1 drop of Tropicamide 1%/Phenylephrine 2.5% followed by a one minute wait. A second drop of Tropicamide 1%/Phenylephrine 2.5% will then be administered followed by a 15 second wait after which 2 drops of Brimonidine will be administered. Brimonidine: 2 drops administered once in the left eye Tropicamide: 1 drop administered at two different times points in both the left and right eyes. Phenylephrine Ophthalmic Product: 1 drop administered at two different time points both the left and right eyes.
Pupil Reaction to Light
1 score on a scale
Standard Deviation 0
1 score on a scale
Standard Deviation 0

Adverse Events

Group 1 Right Eye

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Group 1 Left Eye

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Group 2 Right Eye

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Group 2 Left Eye

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

All Group 1 Participants

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

All Group 2 Participants

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Keith Walter, MD

Wake Forest University School of Medicine

Phone: 336-716-2144

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place