Astigmatism is one of many kinds of vision defects that a person can suffer from. Most people are familiar with nearsightedness, farsightedness, and also other eye defects such as glaucoma etc. (…)
If you look at something and see two images of the particular object instead of just one, then you could be suffering from a vision problem known as diplopia, or as is more commonly referred to – double vision. (…)