Prevalence of Dyschromatopsia in Glaucoma Patients

Withdrawn before enrolling

Conditions studied: Open Angle Glaucoma

In brief

Glaucoma is a progressive disease resulting in loss of retinal nerve cells and their axons (retinal nerve fibers). Retinal nerve fibers are ordered in a special manner when they enter the optic nerve. Hence, damage to the retinal nerve fibers by glaucoma results in visual field defects at certain locations. Furthermore, the retinal nerve fiber layers from different receptors for different colors are ordered in a special manner as well. Thus, it is possible that glaucomatous damage causes color vision dysfunction (dyschromatopsia). At the moment there is disagreement whether dyschromatopsia occurs at early- to mid-stage or only in end-stage glaucoma. By testing color vision in glaucoma patients the prevalence of dyschromatopsia in glaucoma and in different stages of the disease will be investigated.

Key facts

Study ID

NCT01994564

Run by

Massachusetts Eye and Ear Infirmary

People needed

0

Starts

2012-11-01

Expected to finish

2014-01-01

Last updated by the study team

2013-11-26

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• diagnosis of open angle glaucoma
• visual acuity >/= 20/50
• age >/= 18 (no upper limit)
• male or female gender

You may not qualify if…

• other type of glaucoma
• age <18
• other retinal disease (e.g. age related macular degeneration)
• other disease affecting the optic nerve or the retinal nerve fibers
• known color blindness

Where it is running

• Massachusetts Eye & Ear Infirmary — Boston, Massachusetts, United States

Full record on ClinicalTrials.gov

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