No patients with current use of or likely need for systemic or ocular medications known to be toxic to the lens, retina or optic nerve, such as: Deferoxamine, Chloroquine/Hydroxychloroquine (Plaquenil), Tamoxifen, Chlorpromazine, Phenothiazines, Ethambutol, Ocular or systemic steroids or use of steroid-containing inhalers or nasal sprays utilized more than 6 days a month on average-any regular use of pills containing steroids.