We are updating the design of this site. Learn more.
Show more
ClinicalTrials.gov
ClinicalTrials.gov Menu
Trial record 2 of 2 for:    "ocular albinism"

Visual Function and Ocular Pigmentation in Albinism

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00001153
First Posted: December 10, 2002
Last Update Posted: March 4, 2008
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
National Institutes of Health Clinical Center (CC)
November 3, 1999
December 10, 2002
March 4, 2008
June 1976
Not Provided
Not Provided
Not Provided
Complete list of historical versions of study NCT00001153 on ClinicalTrials.gov Archive Site
Not Provided
Not Provided
Not Provided
Not Provided
 
Visual Function and Ocular Pigmentation in Albinism
Visual Function and Ocular Pigmentation in Albinism
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.
Observational
Not Provided
Not Provided
Not Provided
Not Provided
Not Provided
  • Albinism
  • Albinism, Ocular
  • Albinism, Oculocutaneous
Not Provided
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
130
May 2000
Not Provided

Patients have been recruited into the study by referral from an ophthalmologist or pediatrician.

Entrance into the study was dependent upon clinical evidence of decreased or absent pigmentation in skin, hair, and/or eyes.

The definition was purposefully broad to include the broad range of phenotype variations and clinical heterogeneity.

The purpose of the study id to be able to document iris and retina/choroidal pigmentation and correlated these finding with visual function.

Sexes Eligible for Study: All
Child, Adult, Senior
No
Contact information is only displayed when the study is recruiting subjects
United States
 
 
NCT00001153
760207
76-EI-0207
Not Provided
Not Provided
Not Provided
Not Provided
National Eye Institute (NEI)
Not Provided
Not Provided
National Institutes of Health Clinical Center (CC)
May 1999