Country estimates of distance-vision loss
The VLEG estimates at individual country level may be found in these maps, which provide details of the prevalence, persons with visual impairment and gender differences by country.
The maps also show how these parameters are estimated to have changed over the period 1990 to 2015 in five-yearly intervals.
The 20 countries that are estimated to have the highest number of persons with a visual impairment in 2015 are shown in Table 4 below. As may be expected, this reflects to a large extent population size; other factors are the higher prevalence in poorer countries and larger numbers of more elderly persons in the High-Income countries. Collectively, the 20 countries account for more than three quarters (77%) of all visual impairment.
China and India together account for 45% of visual impairment, whilst their combined populations represent 37% of the global population.
The age-standardised prevalence rate (all ages) for visual impairment is a better measure to compare the relative burden of disease in different countries, as it adjusts for the different demographic profiles between countries. The 20 countries that have the highest prevalence are shown in Table 5 below. It is not surprising to see low-income countries predominate in the list.
|Country||Blind||MSVI||Blind + MSVI|
% Visual Impairment (Blindness + MSVI)