Laser Eye Surgery
The Laser Eye Surgery reshapes the cornea
The Laser Eye Surgery is intended to reduce a person's dependency on
glasses or contact lenses.
Doctors use a laser to permanently change the shape of the cornea,
the clear covering over the coloured iris,
and the lens, which is just behind the pupil of the eye.
What does the Laser Eye Surgery entail?
The Laser Eye Surgery is done as an out-patient procedure and takes about an hour.
Local anaesthetic drops are placed in the eye being treated.
In the Laser Eye Surgery a knife is used to cut a flap in the cornea.
In the Laser Eye Surgery a hinge is left at one end of this flap.
The flap is folded back to reveal the middle part of the cornea.
Pulses from a laser vaporise a portion of this and the flap is replaced.
After the Laser Eye Surgery an eye patch is usually worn over the treated eye for 24 hours.
How does Laser Eye Surgery improve vision?
People need to wear glasses for different reasons.
Some people are said to be short-sighted or myopic.
This is due to the cornea being too steeply curved
or the eye longer than normal. Laser Eye Surgery correct it.
Therefore, light rays fall in short of the retina -
the area at the back of the eye that interprets the image -
and results in blurred distance vision. Laser Eye Surgery correct it.
Other people are long-sighted or hyperopic because their cornea
is too flat or the eye is too short. This means that the light rays
focus too far beyond the retina. Laser Eye Surgery correct it.
Others have a condition where the cornea is oval shaped rather than
spherical, called astigmatism. This produces two different focal
points which can blur images at all distances. Laser Eye Surgery correct it.
Laser eye surgery to reshape the cornea can help to correct all these problems. |