Hypovitaminosis - D causes -: (A) Zonular cataract, (B) Blue - Dot cataract, (C) Rosette cataract, (D) Cupliform cataract
Answer is A. Zonular or lamellar cataract is a congenital type Etiology may be either genetic or environmental in origin. Environmental form is associated with: deficiencyof vitamin D hypocalcemia Sometimes maternal rubella infection contracted between 7th and 8th week of gestation may also cause lamellar cataract.