CompletedNot Applicable

Impact of Color Correcting Lenses on Color Vision Deficiency

United States35 participantsStarted 2022-07-28

Plain-language summary

To demonstrate improved color vision in subjects with color vision deficiencies while wearing color-correcting lenses and after color-correcting lense use.

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * no reported history of eye, systemic or ocular disease * VA of 20/30 in each eye * hereditary color vision deficient (CVDs) verified by failing scores on the red-green anomaloscope (outside system normal range) and Ishihara testing (3 or more errors on 14 testable plates) * color vision normal (CVNs) verified by passing red-green anomaloscope (outside system normal range) and Ishihara testing (3 or more errors on 14 testable plates) Exclusion Criteria: * reported use of sleep-inducing or wakefulness drugs

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Cone Contrast Test

Timeframe: 2 WeekS

Cone Contrast Naming Test

Timeframe: 2 Weeks

Letter Chart Testing

Timeframe: 2 Weeks

Color Matching

Timeframe: 2 Weeks

Color Identification Test

Timeframe: 2 Weeks

Visual Electrodiagnostic Testing

Timeframe: 2 Weeks

Trial details

NCT IDNCT05463016

SponsorUniversity of the Incarnate Word

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2023-08-01

View on ClinicalTrials.gov More Color Blindness trials

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.