RISK OF BILATERAL IDIOPATHIC PRERETINAL MACULAR FIBROSIS

To ascertain the risk of the development of bilateral idiopathic prere tinal macular fibrosis, we retrospectively studied 380 consecutive pat ients with idiopathic preretinal macular fibrosis, Eighty (21%) patien ts had bilateral involvement. Sixteen (39%) of 41 patients with diabet es, 40 (28%) of 144 with hypertension, and 12 of 21 (57%) with bilater al high myopia had bilateral involvement. The prevalence of bilateral involvement was significantly higher in patients with these three path ologies than in patients without these conditions (p<0.01, p<0.02 and p<0.01, respectively), In patients with diabetes or hypertension, no s ignificant difference was found in the prevalence of posterior vitreou s detachment (PVD) between involved or uninvolved eyes, Diabetes, hype rtension even without retinopathy, and high myopia may be risk factors for bilateral involvement of idiopathic preretinal macular fibrosis, Factors other than PVD may be involved in the development of idiopathi c preretinal macular fibrosis in patients with diabetes or hypertensio n,