Incidence of blindness and low vision in a sample population: the Priverno Eye Study, Italy.

摘要: Abstract Purpose To study the incidence of blindness and low vision over a 7-year period. Design Population-based cohort study. Participants The survivors original 860 persons from Priverno, Italy, aged 45 to 69 years, were reexamined. Of 760 eligible survivors, 619 (81.4%) had follow-up visit. Methods Baseline examinations included collection anamnestic ophthalmologic data by same observers using methods classification criteria minimize sources variability. Main outcome measures Best-corrected visual acuity (VA) measured at 4 m standardized logarithmic chart was expressed as logarithm minimum angle resolution (logMAR). World Health Organization definitions adopted (respectively, VA > 1.3 logMar 0.6 in better eye or either eye). risk for impairment those without one both eyes baseline; participants one-eye baseline. Results A total 33 defined incident cases impairment. overall figures blindness, vision, respectively 0.2% (95% confidence interval [CI], 0.0–0.9), 1.3% CI, 0.7–2.6), 1.2% 0.6–2.4), 2.9% 1.8–4.6). Conclusions This provides population-based estimates an adult, free-living European population. With respect younger participants, older subjects baseline higher impairment, main causes which cataract, myopia, diabetic retinopathy. subgroup 55 64 years significantly than that found Beaver Dam 5-year similar 10-year Study, when adopted. difference may be partially explained social cultural habits female samples, but many other factors play role.