Search This Blog

Friday, August 31, 2007

Central areolar choroidal dystrophy

Inheritance is autosomal dominant
Presentation is in the 20's to 30's with gradual impairment of central vision.

Signs in chronological order:
1) Non-specific foveal granularity.
2) Circumscribed RPE atrophy and loss of the choriocapillaris at the macula.
3) Slowly expanding geographic atrophy with prominence of large choroidal vessels .

Prognosis is poor with severe visual loss occurring by the 50's to 60's. So if you see a younger patient with macular pigment changes orgeographic atrophy, consider this diagnosis.