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Common Vision ProblemsYour doctor can identify many of the common vision problems, including:Nearsightedness - images focus in front of the retina because the eye is too long or the cornea too curved, so objects far away are blurry. Farsightedness - images focus behind the retina because the eye is too short or the cornea is too flat, so objects close to you are blurry. Astigmatism - images are distorted and are not uniform in all directions, so objects both near and far appear blurry. Presbyopia - disorder caused by the normal aging process that typically affects reading vision. Doctors can also measure the severity of these vision problems by evaluating the shape of your eye and its cornea. The results determine your prescription. These problems are usually corrected with eyeglasses, contact lenses, or by laser vision correction procedures - AST, CK and LASIK (more information also provided by Alcon Laboratories, click here). However, good visual acuity does not necessarily mean good visual quality. Experts believe other qualitative factors contribute to common low-light vision problems, including glare and halos. You can have these vision problems and still score 20/20 on a vision exam.
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