My Eye Sight Has Been Going Down Hill For Awhile

my eye sight has been going down hill for awhile now, but you think that comes with age. but what I am really trying to figure out is why in the last several months, I have very bad balance in me legs, I need two even lean on something to put my pants on, I had a few falls because of it. I have un easy footing, and wobble in legs, I just don't know what's really going on, If you could stir me in right direction