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
The central nebular corneal opacity is easily treated with – 
Select and explain. 
A. Lamellar keratoplasty, B. Penetrating keratoplasty, C. Gas permeable contact lens, D. Soft contact lens
A: Lamellar keratoplasty
Answer: A: Lamellar keratoplasty 
Explanation: Central nebular opacity is treated by phototherapeutic keratectomy with excimer laser (treatment of choice) or lamellar keratoplasty.