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Dear Eyecare Practitioner: May 30, 1989
This is to inform you that the Food and Drug Administration is requesting manufacturers of cosmetic extended-wear soft contact lenses to indicate a recommended wearing time of 1 to 7 days in the product labeling, and to strengthen warnings about the risk of ulcerative keratitis and the importance of proper lens care in reducing this risk.
Our concern about the safety of wearing these lenses beyond 7 days is based partly on a multicenter study on ulcerative keratitis and contact lenses sponsored by the Contact Lens Institute (CLI) and conducted by Abt Associates Inc, of Cambridge, Mass, and the Massachusetts Eye and Ear Infirmary of Harvard Medical School. We commend the CLI for sponsoring this study and for making the results available. The principal findings of the CLI sponsored study are as follows:
• The annual incidence of ulcerative keratitis is estimated to be
Villforth JC. News and Comment. Arch Ophthalmol. 1989;107(7):969. doi:10.1001/archopht.1989.01070020031023