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What is Which is the commonest congenital cataract which presents as visual impairment? and explain in detail?
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.