<prompt> Common cause of childhood blindness are all EXCEPTMalnutritionDacrocystitsVit A deficiencyMeasles  <response>: Dacrocystitis: 546-48- Parson 21st edition; 514-Nema 6thed; 477-Khurana 5thedCauses of childhood blindness Vitamin A deficiency Measles Conjunctivitis Ophthalmia- neonatorum Congenital cataract Retinopathy of prematurity ROP Common causes of childhood blindness in India include corneal scar 26. Congenital anomalies of the globle 25 disease of the retina 21 and cataract 12. The corneal scarring is mainly due to vitamin A deficiency, trachoma and conjunctivitis 514- Nema 6thed Nutritional blindness can occur at any age but is most frequently seen in under privileged young children in the developing countries because the main contributing factors - measles, frequent diarrhea, protein energy malnutrition and other febrile illness are more common in them, Severe Karatomalacia is usually seen below 5 years of age and is particularly common in children between 6 months and 3 years of age. Since affected individuals are young the impact in number of blind person- years is tremendousCauses of impaired vision in childhoodAnatomical classificationWhole globe microphthalmos, anophthalmos, phthisis bulbi atrophic bulbiCornea: scar, anterior staphyloma, dystrophyLens: cataract, dislocation, aphakiaUvea: aniridia, coloboma, uveitisRetina: retinopathy of prematurity, retinal dystrophy, retinal detachment, vasculitisGlaucoma: buphthalmosOptic nerve optic atrophy, hypoplasiaOther: cortical blindness, amblyopiaAetiological classificationHereditary: chromosomal disorder, single-gene defectsIntrauterine: congenital rubella, foetal alcohol syndromePerinatal: ophthalmia neonatorum, retinopathy of prematurity, birth traumaChildhood: vitamin A deficiency, measles, traumaUnclassified impossible to determine the underlying cause 