
Friday, November 6, 2009
prk recovery
When we’re myopic, we have corneas that are too steep. That means the light rays entering our eyes are refracted too sharply, and they come to a focus in front of the retina instead of on it. So we see a blurry image.
LASIK correction
The laser vaporizes tiny amounts of corneal tissue such that the cornea is made less steep. Then the light rays will focus on your retina and you’ll see clearly.
Correcting Hyperopia
In hyperopic vision, the cornea is too flat. So the light rays are refracted too little and come to a focus behind the retina. So again we see a blurry image.
LASIK correction
The laser vaporizes tiny pieces of corneal tissue such that the cornea is made more flat and the light rays can focus on the retina to give sharp vision.
Correcting Astigmatism
Astigmatism consists of small irregularities on the corneal surface, such that vision is uneven and has blurry areas.
LASIK correction