Which is the commonest congenital cataract which presents as visual impairment?: (A) Nuclear, (B) Zonular, (C) Capsular, (D) Coralliform
Answer is B. Lamellar or Zonular cataract refer to the developmental cataract in which the opacity occupies a discrete zone in the lens. It is the most common type of congenital cataract presenting with visual impairment. It is usually bilateral. Typically this cataract occurs in a zone of fetal nucleus surrounding the embryonic nucleus. Ref: Ophthalmology by A K Khurana, 4th edition, Page 172.