“…Fong et al [ 235 ] in a retrospective study of 103 cases of CRVO in young, nondiabetic adults, followed for at least 6 months, found that 32 % had a fi nal visual acuity of 20/200 or worse and 6 % no light perception. Giuffré et al [ 236 ], in a study of 20 patients with CRVO aged 40 years or less, found that the visual prognosis of young people with CRVO is often poor. In contrast to all those studies, in my study [ 180 ], none of those under the age of 45 years, with initial visual acuity of 20/60 or better, had visual acuity deterioration, and in those with initial visual acuity of 20/70 or worse, it improved in 80 %.…”