This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
[{'content': "Prominent corneal nerves are seen in all except - \nSelect and explain. \nA. Ectodermal dysplasia, B. Ichythyosis, C. Refsum's syndrome, D. Macular dystrophy", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Macular dystrophy (Groenouw type-II)It is an autosomal recessive dystrophy characterisedby appearance of dense grey opacity in the centralcornea. The condition results due to accumulation ofmucopolysaccharides owing to a local enzymedeficiency. It occurs in childhood (5 to 10 years) andleads to marked defective vision in early life, whichusually requires penetrating keratoplasty. REF:Comprehensive ophthalmology,AK Khurana,4th edition,pg no.118.', 'role': 'assistant'}]