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 choice for Aniseikonia 
Select and explain. 
A. Ohoptic exercise, B. Spectacles, C. Surgery, D. Contact lens
D: Contact lens
Answer: D: Contact lens 
Explanation: Treatment 1. Optical aniseikonia may be corrected by aniseikonic glasses, contact lenses or intraocular lenses depending upon the situation. 2. For retinal aniseikonia treat the cause. 3. Coical aniseikonia is very difficult to treat. Image : Aniseikonia Reference : A K KHURANA OPHTALMOLOGY,Edition 4,Page-39