All of the following are cause of posterior subcapsular cataract except -: (A) Myotonic dystrophy, (B) Wilson's Disease, (C) Ionizing radiation, (D) Congenital cataract
Answer is D. Causes of posterior subcapsular cataract: Myotoic dystrophy DM Down's syndrome Busulfan, Chloroquine Ionizing radiation Senile cataract Wilson's disease Atopic dermatitis Coicosteroids Trauma Galactosemia Infrared (Ref: Parson's 22nd/e p.270 & 21st/e p.258, 260; Khurana 7th/e p.189& 4th/e p.177)