Fig. 6. A. Preoperative photograph of the left eye of a 64-year-old woman with SC disease, who received cryotherapy and scatter photocoagulation therapy for proliferative sickle retinopathy, resulting in the development of an epiretinal membrane. At this point, visual acuity was 20/400. B. Postoperative photograph after vitrectomy and removal of the epiretinal membrane. Visual acuity was improved to 20/60. This patient received preoperative exchange transfusions and postoperative oxygen therapy.