No current use of or likely need for systemic or ocular medications known to be toxic to the lens, retina, or optic nerve, such as: a) Deferoxamine; b) Chloroquine/Hydroxychloroquine (Plaquenil); c) Tamoxifen; d) Phenothiazine; e) Phenothiazines; f) Ethambutol; g) 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.