Lasik Or Laser Surgery Of The Eye
Lasers have been used in eye surgery ever since the 1970s. Today, there are more eye diseases that are being treated with lasers. Lasers have a specific wavelength that allow them to absorb energy in a selected tissue and leave the surrounding tissue intact. Laser beams are extremely precise. In fact, they can cut a notch in a human hair strand without breaking the strand.
A thermal laser converts light into heat. This type of laser will destroy tissue that is abnormal and heal blood vessels. Photoablative lasers sculpt or cut tissue. They are also used to alter the shape and surface of the eye as well as remove tissue.
Lasers can help the preserve the vision of a patient who is suffering from diabetic retinopathy. The light from the laser will seal the blood vessels inside of the retina that are leaking. Lasers can also be used to treat tumors and blood vessel problems, which are retinal disorders that are unusual.
Lasers are also used to treat glaucoma. A laser can open up a drainage canal inside of the eye that has been blocked. It can also help alleviate eye pressure.
Lasers cannot remove cataracts, but experts are hoping that they will be able to in the future. Right now, lasers can open the posterior capsule, which can become cloudy after a cataract operation. This can help restore vision in just a few hours.
The excimer laser has been receiving a lot of attention in recent years. It can be used to correct farsightedness, nearsightedness and astigmatism, which are problems that are also known as refractive errors. Refractive laser surgery often eliminates or decreases the need for glasses or contacts.