LASIK is a type of refractive surgery. This kind of surgery uses a laser to treat vision problems caused by refractive errors. You have a refractive error when your eye does not refract (bend) light properly.
For you to see clearly, light rays must travel through your cornea and lens. The cornea and lens refract the light so it lands on the retina. The retina turns light into signals that travel to your brain and become images. With refractive errors, the shape of your cornea or lens keeps light from bending properly. When light is not focused on the retina as it should be, your vision is blurry.
With LASIK, your ophthalmologist uses a laser to change the shape of your cornea. This improves the way light rays are focused on the retina. LASIK is used to treat myopia (nearsightedness), hyperopia (farsightedness) and astigmatism.
The goal of LASIK is to correct your refractive error to improve your vision. LASIK may reduce your need for eyeglasses or contact lenses. In some cases, it may even allow you to do without them completely
To have LASIK surgery, you need to meet certain requirements. Here are some of them.
Some people are not candidates for LASIK. They include people with:
Your ophthalmologist can talk with you about other conditions that may keep you from having LASIK.
To determine whether you are a candidate for LASIK, your ophthalmologist will examine your eyes. Here is what will be done:
In some cases, your ophthalmologist will measure the quality and the amount of tears that your eyes make. This is to check if you have dry eye, and if so, how severe it is.
Before surgery: You and your ophthalmologist will discuss your vision needs based on your lifestyle. For example, if you play sports, you may be seeking clear distance vision from surgery.
Also, you and your ophthalmologist should discuss your expectations for LASIK. People who have LASIK to achieve perfect vision without glasses or contacts run the risk of being disappointed. LASIK allows people to do most of their everyday tasks without corrective lenses. However, you might need to wear glasses for certain activities, such as reading or driving at night.
Your ophthalmologist will thoroughly examine your eyes and make sure you are a candidate for LASIK. Here is what he or she will do:
During LASIK: LASIK is done in an outpatient surgery center or your ophthalmologist’s office.Your eye surgeon uses a laser to reshape your cornea. Here is what to expect:
Like any surgery, LASIK carries risks of problems or complications you should consider.
Some people have side effects after LASIK that usually go away over time. However, in rare cases, they may not go away. For example, almost everyone who has LASIK will have dry eyes and changing vision during the day. These symptoms usually fade within a month. For some people, though, they may take longer to disappear or they may remain.
Other side effects, either temporary or permanent, could include:
Other rare risks include:
Also, with LASIK, your vision may end up being undercorrected or overcorrected. These problems often can be improved with glasses, contact lenses, or additional laser surgery.
If you are happy wearing contacts or glasses, you may not want to have refractive surgery. Together, you and your ophthalmologist can weigh the risks and rewards of LASIK.
LASIK is a type of refractive surgery. With this outpatient procedure, a laser is used to reshape your cornea, improving how light rays are focused in the eye.
LASIK is used to treat myopia (nearsightedness), hyperopia (farsightedness) and astigmatism. It cannot correct presbyopia, the normal loss of close-up vision that comes with age. However, some people have LASIK to achieve monovision. This allows them to use one eye for close vision and the other for seeing distant objects clearly.
With LASIK, people can do most of their everyday tasks without corrective lenses. However, you might need to wear glasses for certain activities, such as reading or driving at night.
Your ophthalmologist will thoroughly examine your eyes to make sure you are a good candidate for LASIK. You and your ophthalmologist will also discuss the risks and rewards of this refractive procedure.
If you have any questions about your eyes or your vision, speak with your ophthalmologist. He or she is committed to protecting your sight.