you are asking a bunch of strangers on an internet forum important questions like that?
Ok, I'll bite, the right eye has
gangrene!! Have it removed immediately......
(...)
just kidding, on top of the other advice, how old are you?
I'm turning 55 this year and my eyesight has been going downhill for years, on top of being nearsighted, I now need bi-focals to read, but still wind up either holding the text at arm's length or six inches away, I increasingly have to squint to read small text, I have trouble seeing well when driving down a dark, unlghted road, the lights of oncoming cars momentarily blind me (which I am used to, but drives my wife nuts)....
...but at least I can still get a hard-on which is the only thing that really matters if you are a man...