This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea, Subject name: Ophthalmology
Radial keratotomy is done for: 
Select and explain. 
A. Myopia, B. Hypermetropia, C. Corneal scar, D. All the above
A: Myopia
Answer: A: Myopia 
Explanation: Myopia was earlier being treated by radial keratotomy procedure. Radial Keratotomy Radial Keratotomy Incisions are made in the cornea using diamond knife up to mid stroma. Incisions relax central steep cornea. Chances of complications like irregular healing, perforation, scattering are higher so replaced by LASIK.