A complete ophthalmic evaluation and tests: autofluorescence and Fluorescein angiography, Color Fundus Photography, OCT, including liver and adrenal functions and pregnancy test, if applicable will be done on the screening visit. If the patient is eligible, the patient will be started on ketoconazole 600 mg per day by mouth for the following next 6 weeks. The patient will be rechecked at weeks 5-6, 10,14 and 18. During all these visits a complete ophthalmic examination autofluorescence, OCT, and color fundus photographs will be done.