Prevalence and causes of blindness and vision impairment: magnitude, temporal trends and projections in South and Central Asia.

Background: To assess prevalence and causes of vision loss in Central and South Asia.

Methods: A systematic review of medical literature assessed the prevalence of blindness (presenting visual acuity<3/60 in the better eye), moderate and severe vision impairment (MSVI; presenting visual acuity <6/18 but ≥3/60) and mild vision impairment (MVI; presenting visual acuity <6/12 and ≥6/18) in Central and South Asia for 1990, 2010, 2015 and 2020.

Results: In Central and South Asia combined, age-standardised prevalences of blindness, MSVI and MVI in 2015 were for men and women aged 50+years, 3.

Number of People Blind or Visually Impaired by Cataract Worldwide and in World Regions, 1990 to 2010.

Purpose: To estimate prevalence and number of people visually impaired or blind due to cataract.

Methods: Based on the Global Burden of Diseases Study 2010 and ongoing literature research, we examined how many people were affected by moderate to severe vision impairment (MSVI; presenting visual acuity <6/18, ≥3/60) and blindness (presenting visual acuity <3/60) due to cataract.

Results: In 2010, of overall 32.

Prevalence and causes of vision loss in sub-Saharan Africa: 1990-2010.

Aim: To estimate the magnitude, temporal trends and subregional variation in the prevalence of blindness, and moderate/severe vision impairment (MSVI) in sub-Saharan Africa.

Methods: A systematic review was conducted of published and unpublished population-based surveys as part of the Global Burden of Disease, Risk Factors and Injuries Study 2010. The prevalence of blindness and vision impairment by country and subregion was estimated.