The major causes of blindness in children vary widely from region to region
, being largely determined by socioeconomic development, and the availabili
ty of primary health care and eye care services. In high-income countries,
lesions of the optic nerve and higher visual pathways predominate as the ca
use of blindness, while corneal scarring from measles, Vitamin A deficiency
, the use of harmful traditional eye remedies, and ophthalmia neonatorum ar
e the major causes in law-income countries. Retinopathy of prematurity is a
n important cause in middle-income countries. Other significant causes in a
ll countries are cataract, congenital abnormalities, and hereditary retinal
dystrophies. It is estimated that, in almost half of the children who are
blind today, the underlying cause could have been prevented, or the eye con
dition treated to preserve vision or restore sight.
The control of blindness in children is a priority within the World Health
Organization's VISION 2020 programme. Strategies need to be region specific
, based on activities to prevent blindness in the community through measles
immunization, health education, and control of vitamin A deficiency - and
the provision of tertiary-level eye care facilities far conditions that req
uire specialist management.