Lasik surgery is performed on people who have nearsightedness, farsightedness or astigmatism, in order to correct vision. This type of surgery is focused on the cornea, the transparent area in front of the eye that allows light to pass . LASIK is a type of surgery that is performed with a laser is used to reshape the cornea without affecting any of the other cells around the cornea . One of the reasons that Lasik surgery was developed thanks to the advances of photorefractive keratectomy , another type of laser surgery used to correct vision by reshaping the cornea. A reshaped cornea may itch and be painful during the healing process .
The difference between LASIK and PRK is that LASIK surgery creates a small flap that separates the eye before correcting the cornea. Once the cornea has been reshaped , the flap is put back on the cornea . This prevents itching and pain experienced in the past after photorefractive keratectomy surgery .
Among the problems that can occur with laser surgery are:
Infections with LASIK
LASIK eye surgery can be compared with other surgical procedures in the sense that there is always a possibility of infection. Some of the complications of infection include inflammation and swelling in the area. If an infection develops , the ophthalmologist will provide aggressive treatment with antibiotic drops to prevent temporary or permanent loss of vision. If the infection is severe , it may be necessary for the surgeon to perform a second LASIK correction surgery to correct the effects of tissue healing .
In some cases , when someone somente LASIK eye surgery , after it shall have double vision . In most cases, double vision disappears after a couple of weeks. There are cases ( although rare ) in which the double vision remains permanently. This is something to consider carefully before undergoing LASIK surgery .
Full Vision Loss
The complete loss of vision with Lasik surgery is when the surgeon is not experienced enough to know that the cornea is too thin for LASIK surgery and does anyway. In this case , the cornea is damaged so badly that they lost sight in that eye. This is extremely rare as it takes making LASIK surgery a few years and the professionals know exactly what to do . The surgeon or his staff will see that the cornea is too thin when they make initial eye exam and refuse to perform the surgery so , lose sight during this operation is almost impossible.
Having dry eyes due to LASIK eye surgery is that the operation reduces the amount of normal eye lubrication . Dry eye can cause pain , redness and itching. In minor cases , dry eye can be relieved with eye drops and other eye medicines topics. It is common for the patient to feel dry eye after surgery but usually this feeling usually disappear shortly .
Irregular astigmatism is when the cornea has a smaller area . It can occur naturally. However, it can also occur when the laser correction is not centered properly on the eye . Symptoms, when this condition occurs LASIK surgery may include double vision and ghosting .
This condition, when caused by LASIK surgery , is nicknamed the sands of the Sahara . It happens when inflammation under the flap that is cut before the LASIK eye surgery . Although it is normal a certain amount of inflammation of the cornea after LASIK eye surgery if severe and left untreated, can impair healing and may miss the view .
The keratoconus or ectasia
This condition occurs when , during LASIK surgery , the flap is cut too deep, you take too much corneal tissue . This makes the eye surface to bulge . When this happens, the vision becomes distorted permanently. The only ways to correct lenses are gas permeable contact or corneal implants . Both solutions subject the cornea instead.
After LASIK surgery , sometimes halos at night and other dark situations . Standard procedure LASIK is an area of 7 mm in diameter on the cornea . Some LASIK patients dilate beyond the limit of 7 mm in dark conditions . If the pupils dilate beyond the area treated with LASIK , light entering possibly be distorted by the area outside the treated area. The result is a halo effect or blurred vision that can be detrimental to night vision and especially dangerous for night driving .