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The Effect of Dosage of Caffeine on Intraocular Pressure

NCT01793311 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2013-02-15

No results posted yet for this study

Summary

The goal of the study is to determine the effect of different doses of caffeine on intraocular pressure. We hypothesized that higher dosage of caffeine would increase intraocular pressure more than lower doses.

Eligible subjects will be randomized into three groups:

1. group 1: intake of decaffeinated coffee
2. group 2: intake of coffee with lower caffeine dose
3. group 3: intake of coffee with higher caffeine dose

Intraocular pressure will be measured at 0, 30, 60 and 90 minutes after coffee intake.

Conditions

  • Intraocular Pressure
  • Caffeine Dosage

Interventions

OTHER

decaffeinated coffee

contains caffeine 0.5-2 mg

OTHER

regular dose coffee

contains 91.8 mg of caffeine

OTHER

high dose coffee

contains 144 mg of caffeine

Sponsors & Collaborators

  • Chiang Mai University

    lead OTHER

Principal Investigators

  • Damrong Wiwatwongwana, M.D. · Chiang Mai University

Study Design

Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
35 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2013-02-28
Primary Completion
2013-03-31
Completion
2013-03-31

Countries

  • Thailand

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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 NCT01793311 on ClinicalTrials.gov