This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Which of the following is the least common corneal dystrophy – 
Select and explain. 
A. Macular dystrophy, B. Lattice type I, C. Lattice type III, D. Granular corneal dystrophy
A: Macular dystrophy
Answer: A: Macular dystrophy 
Explanation: Epithelial basement membrane dystrophy is the most common anterior corneal dystrophy.
Lattice dystrophy is the most common stromal corneal dystrophy (Lattice Type I is the commonest
Macular dystrophy is the least common stromal dystrophy.
Fuch's endothelial dystrophy is the most common Posterior (endothelial) corneal dystrophy.