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': 'Which one of the following stromal dystrophy is a recessive condition ? \nSelect and explain. \nA. Lattice dystrophy, B. Granular dystrophy, C. Macular dystrophy, D. Fleck dystrophy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: It is an autosomal recessive dystrophy characterised by appearance of dense grey opacity in the central cornea. The condition results due to accumulation of mucopolysaccharides owing to a local enzyme deficiency. It occurs in childhood (5 to 10 years) and leads to marked defective vision in early life, which usually requires penetrating keratoplasty.Reference:Comprehensive ophthalmology,AK Khurana,4th edition,page no.', 'role': 'assistant'}]