This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Optics and refraction, Subject name: Ophthalmology
Treatment of presbyopia - 
Select and explain. 
A. LASIK, B. Concave lens, C. Convex lens, D. Radial keratotomy
C: Convex lens
Answer: C: Convex lens 
Explanation: Treatment Optical treatment. The treatment of presbyopia is the prescription of appropriate convex glasses for near work.The weakest convex lens with which an individual can see clearly at the near point should be prescribed, since overcorrection will also result in asthenopic symptoms. Reference : A K KHURANA OPHTALMOLOGY,Edition 4,Page-42