Dear Sir, Your nephew is myopic. Usually myopic patients tend to have retinal degenerations in the periphery of the retina. You should explain him to report if he notices following symptoms: 1. Floaters : Sudden onset appearance of moving black spots in front of eye 2. Flashes of light : Apparent bursts of light seen in the peripheral vision in the absence of any such a real light 3. Fall of curtain in front of the eye ( 1/2 or full) This is very important to diagnose earliest if some problem arises.Please explain him. Now, your ophthalmologist must have seen some lesions / weak areas which does not need any treatment. But I will suggest you to visit some retina specialist so that lesions can be categorized better. Hope this helps you.