ottawa laser eyesight correction

People who wear glasses due to either myopia or hyperopia will often have some astigmatism as well. But astigmatism can also occur on its own and result in the need to wear glasses. An eye with astigmatism has an uneven surface and is shaped more like a football whereas a normal shaped eye is more spherical, like a basketball. Astigmatism results in having more than one focal point and blurred vision.

Presbyopia is a natural aging process that usually occurs between the ages of 40 and 50. The lens of the eye hardens and the muscles weaken. When people who have perfect vision all their lives become presbyopic, they need to wear reading glasses. People who already wear glasses for distance vision need to wear bifocals.