Oh, from what you said, I can see that your problem is quite complicated. Because we get presbyopia both of our eyes at the same time. And it is true that some people would have got one of their eyes presbyopia. This is due to improper use of your eyes, or some other infections. And it is also possible to have macular degeneration in only one eye.
If you are above 45, there is high possibility for you to get the presbyopia. In addition, it is possible for you to get the macular degeneration in only one eye because of the aging problem. The pathological mechanism of macular degeneration is mainly for the macular area structure of the aging change for the performance of the retinal pigment epithelium cells at outside plate. The film ingestion function declines. The digest plate membrane residual body retention in the basement of the cells in the blade and the cells of the effluent form a glass membrane wart. And the secondary pathological function change. It will lead to macular degeneration. When the macular area and long-term chronic light damage, the choroidal vascular sclerosis and retinal pigment epithelial cell aging happen. You should go to the hospital to have a full check on the eyes and accept the medical treatment.