I have visited two or three of them, but each one just gave a different prescription though turns out I have a little blood clot in one eye due to an accident I had a few years ago and a cataract in the other one, though it is to the side and not directly in the front, so no operation is required for that as of now.

Also, currently a broke college student, so don't really have the money to visit a good ophthalmologist :)