Completed

Visual Function and Ocular Pigmentation in Albinism

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What is being collected

Data Collection

Who is being recruted

Albinism

+ Albinism, Ocular
+ Albinism, Oculocutaneous

See all eligibility criteria

How is the trial designed

Other

Observational
Study Start: June 1976

See protocol details

Summary

Principal SponsorNational Eye Institute (NEI)
Last updated: March 4, 2008
Sourced from a government-validated database.Claim as a partner
Study start date: June 1, 1976Actual date on which the first participant was enrolled.

To study the relationship between visual function and ocular (iris, retina/choroidal) pigmentation in patients with albinism and other hypomelanotic disorders. To identify the carrier state in relatives of patients with ocular albinism. Visual function and ocular pigmentation are being studied in patients with albinism and other disorders associated with hypopigmentation. The degree of ocular pigmentation is assessed clinically by estimating the melanin content of the iris, retinal pigment epithelium, and choroid. Visual function is measured in the conventional manner to study central vision, and electrophysiological methods to detect a misrouting of the visual pathways. The purpose of this study is to document the visual deficit and the pigmentary changes of patients with albinism, to observe their natural course, and to determine whether misrouting of the visual pathways is present and is correlated with pigmentation.

Official TitleVisual Function and Ocular Pigmentation in Albinism 
Principal SponsorNational Eye Institute (NEI)
Last updated: March 4, 2008
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
130 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
Healthy volunteers not allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Albinism
Albinism, Ocular
Albinism, Oculocutaneous
Criteria
No eligibility criteria are available at this time.Please check with the study contact for more details. 
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Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has 1 location
Suspended
National Eye Institute (NEI)Bethesda, United StatesSee the location
CompletedOne Study Center
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