Non significant difference were present between interferon monotherapy and interferon plus ribavirin, while patients with diabetes and/or hypertension have shown a high frequency of
retinopathy. The cotton wool spots were seen
in all patients except one patient
in group Ib who developed cotton wool spots and flame shaped haemorrhages at the posterior fundus. The retinopathy developed in some patients as unilateral (5/8) while in others (3/8) patients it was bilateral.