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Basic knowledge of laser eye surgery
Basic knowledge of laser eye surgery

There are good reasons that laser eye surgery has been widely accepted. Most people with refractive errors have to wear eyeglasses or contact lenses. Either kind of eyewear would bother certain group of wearers. As a result, most people experience a new feeling after a laser eye surgery. Various types of laser eye surgeries are performed every day and the market is still on the rise.

It has grown to a worldwide phenomenon that more and more people are considering laser eye surgeries. Nowadays, Lasik and PRK are two major types among all laser eye procedures. Both of the two use a laser treatment to reshape the cornea, while preserving respective difference.

Lasik procedure cuts a flap on the surface of the eye and removes the top layer of the cornea. PRK also involves corneal tissue removal. It uses a laser to etch off the upper layer of the cornea. A difference lies in that PRK uses chemicals to take away a thin layer of the cornea, which facilitates the corneal reshape. PRK does not cut a cornea flap.

Lasik and PRK also have difference in the healing process. The healing time for PRK is typically 5 to 6 six days, while Lasik only takes 2 days. It is important to keep in mind that the bandage can not be taken off until the healing process is over. Some patients are even required to keep the bandage for extra days because their eyes are extremely sensitive to light.

A surgeon of Lasik will first apply anesthetic to the patient using a dropper. After that, he will cut a thin flap on the cornea and then pull back the flap for further steps. The cornea will then be shaved using a laser, so that the cornea will properly focus the light after the surgery. Usually the laser uses blue light pulses for corneal reshape. Because all the common vision problems result from irregular corneal shape, Lasik can fix them effectively. Lasik curable problems include astigmatism, nearsightedness and farsightedness.

Patients should always consult a specialist to get advice on which type of laser eye surgery they should choose. Enough preparation and research are needed.

If you want to know more about vision knowledge, then feel free to visit http://vision.firmoo.com/vision-surgery




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