Lasik Eye Surgery
By: Zaki Abou Mrad
What is Lasik eye Surgery?
LASIK stands for laser in situ keratomileusis, which means using a laser underneath a corneal flap to reshape the cornea (keratomileusis). This procedure utilizes a highly specialized laser designed to treat refractive errors, improve vision, and reduce or eliminate the need for glasses or contact lenses. This laser procedure alters the shape of the cornea, which is the transparent front covering of the eye.
The cornea shape in different cases:
Myopia
In people with myopia, the mismatch in focusing power and eye length causes distant objects to be blurry and near objects to be clearer.
astigmatism
In people with astigmatism, either the corneal or lens shape is distorted, causing multiple images on the retina. This causes objects at all distances to appear blurry. Many people have a combination of either myopia or hyperopia with astigmatism.
Hyperopia
In people with hyperopia, the mismatch in focusing power and eye length causes near objects to be blurry and distant objects to be relatively clearer.