Time Trends of Etiologies of Blindness in Israel 2009-2020:Have Methods to Decrease Leading Causes of Blindness Been Exhausted?

PURPOSE

To perform a nationwide analysis of trends in the incidence of etiologies for legal blindness in Israel during 2009-2020, and to compare the results with those of the previous decade.

DESIGN

Descriptive, retrospective population-based trend study.

METHODS

Data were retrieved from the Israeli National Registry of the Blind during 2009-2020. Data obtained included demographics, years of registration, and causes. Primary and secondary outcomes were the incidence of new certified blindness cases and its comparison with that of the previous decade, respectively.

RESULTS

The age-standardized incidence rate of blindness in Israel decreased from 15.76 per 100,000 residents in 2009 to 11.83 in 2020, a 24.9% drop. The mean annual decline was evident until 2013 (P < .001, 6.15%), but subsequently flattened (P = .71, 0.42%). Age-related macular degeneration (AMD), glaucoma, optic atrophy, and cataract decreased until 2014, and reached a plateau that was maintained until the end of the study period. Diabetic retinopathy (DR) incidence rates diminished throughout the decade (P < .001, 9.2%), with attenuation of the rate of decline after 2014.

CONCLUSIONS

The impact of efforts to reduce the incidence of preventable causes of blindness may have nearly reached saturation for most of the leading causes of blindness in Israel, namely, AMD, glaucoma and cataract. The incidence of DR has been maintained; however, attenuation has been observed. New modalities to detect and treat these causes may have to emerge before a resurgence of improvement can occur.