What Is LASIK Eye Surgery?
LASIK Eye Surgery, also known as Laser-Assisted In Situ Keratomileusis or laser vision correction, is a refractive procedure that reshapes the cornea to correct nearsightedness, farsightedness and astigmatism.
Benefits of LASIK Eye Surgery
Patients who undergo LASIK achieve clear vision without the need for glasses or contact lenses. LASIK offers many improvements over other refractive surgery procedures like:
- Little to no post-operative discomfort.
- Immediate vision improvement.
- Ability to drive or return to work quickly-sometimes as soon as the next day.
Who is a good candidate for LASIK?
While LASIK surgery is very popular, it’s not right for everyone. There are certain criteria a potential patient must meet to be eligible for LASIK:
- Eye health — Conditions such as pink eye, dry eye syndrome, eye infections, or any eye injuries must resolve before you can have LASIK. Cataracts and glaucoma also usually prevent a candidate from qualifying for LASIK.
- Cornea thickness — LASIK improves vision by reshaping the front surface of the eye, the cornea. Your cornea needs to be thick enough to accommodate this reshaping.
- Prescription limits — LASIK results aren’t as predictable if the patient has a very high prescription, whether it be for nearsightedness, farsightedness, or astigmatism. Other vision correction surgeries may be better in these cases.
- Pupil size — Patients with overly large pupils can be at an increased risk for side effects such as halos, glare, and starbursts in low light.
- Age — Patients generally need to be at least 18, in some cases 21. This is mostly because vision continues to change in younger people.
- Stable vision for a year — This is related to the age issue. The patient’s vision needs to be at a stable prescription for at least a year prior to undergoing LASIK. The eyes need to settle in to their prescription.
- Pregnancy — LASIK is not available to women who are pregnant or nursing. This is because hormonal changes during these times can alter the shape of the cornea.
- Overall health — Certain degenerative conditions and autoimmune diseases can preclude a person from having LASIK. This is due to the body’s decreased healing ability.
Is LASIK Eye Surgery Safe?
What happens before LASIK surgery?
Prior to any LASIK procedure, Dr. Keamy performs a thorough eye exam to make sure the patient’s eyes are healthy enough for the procedure. She checks the shape and thickness of the cornea, the pupil size, your refractive errors, and the overall health of your eyes. Since dry eye can be a risk with LASIK, she will check the moistness of your eyes and may recommend a precautionary treatment to lower your risk.
For specifics of the surgery, she will use a corneal topographer to measure the curvature and to create a map of your cornea. She will do a wavefront analysis, where light waves are sent through your eye to give a precise map of any aberrations affecting your vision.
If you wear contact lenses, Dr. Keamy will tell you when you will need to stop wearing them prior to your LASIK procedure. This is usually around two weeks prior to your procedure. The reason for this is that wearing contact lenses can alter the natural shape of your cornea.
Before surgery begins, numbing eye drops are applied to your eye to prevent any discomfort during the procedure. The surgeon will then gently prop your eyelids open using an instrument called a lid speculum, a device used to stabilize the eye. It is normal to feel mild pressure. You will be asked to look at a target light for a short time while he or she watches your eye through a microscope as the laser sends pulses of light to your cornea.
Using targeted excimer laser beam energy, the LASIK procedure reshapes corneal tissue to correct refractive errors. This is done so that light rays are focused more precisely on the retina to produce clear, sharp vision.
Is LASIK Permanent?
How long does it take to recover from laser eye surgery?
What are the risks and side effects with LASIK?
- Dry eyes — LASIK surgery causes a temporary decrease in tear production. This can last for up to six months; eye drops can help manage this.
- Glare, halos, double vision — Your night vision could be affected after your surgery, with halos and glare showing around bright lights. Double vision can develop, as well. These usually last for a period from a few days to a few weeks.
- Under correction or overcorrection — If the laser removes too little or too much tissue, you may not have the correction you desire. This can be easily addressed with a second procedure for undercorrection.
- Astigmatism — If tissue removal is uneven, it can create astigmatism.
- Flap problems — The flap created to access the cornea can develop complications such as infection or unusual epithelium growth.
- Vision loss — In very rare cases, patients have experienced vision loss due to surgical complications.
Can LASIK Be Reversed?
Contact us to learn more about LASIK