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Surface Refractive Index Shift of Kalifilcon A Compared With Dailies Total1 and Precision1 Lenses

NCT04840563 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2026-08-05

Study results available
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Summary

This was a single-site, bilateral, repeated-measures insertion study in habitual soft contact lens wearers. Ten participants were enrolled. All participants attended a Screening/Dispensing Visit at which informed consent was obtained and eligibility was assessed. Eligible participants then wore each of three commercially available daily disposable soft contact lens types - kalifilcon A (Bausch + Lomb), Dailies Total1 (delefilcon A, Alcon) and Precision1 (verofilcon A, Alcon), all -3.00 D - bilaterally for wear times of 0.5, 1, 3, 5 and 10 minutes over a total of 6 study visits. A new lens pair was inserted for each wear time, with a 3-5 minute washout period between lens pairs. Immediately following removal, the right-eye lens was measured for surface refractive index on a Metricon M-2010 Prism Coupler.

Conditions

  • Contact Lens Wear

Interventions

DEVICE

kalifilcon A daily disposable spherical soft contact lens

Commercially available Infuse (kalifilcon A) daily disposable spherical soft contact lens, -3.00 D, worn bilaterally for 0.5, 1, 3, 5 and 10 minutes.

DEVICE

Dailies Total1 (delefilcon A) daily disposable spherical soft contact lens

Commercially available Dailies Total1 (delefilcon A) daily disposable spherical soft contact lens (Alcon), -3.00 D, worn bilaterally for 0.5, 1, 3, 5 and 10 minutes.

DEVICE

Precision1 (verofilcon A) daily disposable spherical soft contact lens

Commercially available Precision1 (verofilcon A) daily disposable spherical soft contact lens (Alcon), -3.00 D, worn bilaterally for 0.5, 1, 3, 5 and 10 minutes.

Sponsors & Collaborators

  • Bausch & Lomb Incorporated

    lead INDUSTRY

Principal Investigators

  • Jeffery Schafer, OD, MS · Bausch & Lomb Incorporated

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2021-04-07
Primary Completion
2021-04-15
Completion
2021-04-15
FDA Device
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04840563 on ClinicalTrials.gov