Am I a Good Candidate for LASIK? 5 Factors Your Eye Doctor Will Check

Table of Contents

Am I a Good Candidate for LASIK? 5 Factors Your Eye Doctor Will Check

Introduction

For someone who has been wearing corrective glasses or contacts for a long time, getting LASIK surgery seems too good to be true. The thought of opening your eyes in the morning and seeing the world so crystal clear seems like a dream. However, you must first qualify for it. In order for your doctor to be confident that this surgery will be a safe and successful one, he needs to check a few things.

The process for being evaluated as a candidate is comprehensive and direct. Here at Golden Vision, our experienced team takes each client through a detailed consultation process so you’ll never be left guessing. Knowing what your doctor will be checking you for lets you go through your appointment confidently. Here are the five main elements your doctor will be checking to determine if LASIK is best for you.

Is Your Cornea Thick Enough for LASIK?

The thickness of your cornea is one of the major factors involved in making the determination of your eligibility for LASIK. The procedure involves your surgeon using a laser that reshapes your cornea to correct your eyesight. To do this safely, a little bit of corneal tissue needs to be removed, but also leaves enough of the tissue in place. That is why your surgeon first needs to know if your cornea is thick enough.

First, your eye doctor measures the thickness of your cornea. To do this, he uses a test called pachymetry. It is painless. For most people to become a candidate, the thickness of their cornea should be about 500 microns. If yours is too thin, LASIK might not be for you. However, there are other alternatives that the doctor could suggest, like PRK or LASEK. These procedures work on the surface of the eye itself. So that you have a better understanding of your options, our team at Golden Vision uses advanced corneal mapping technology to get exact measurements.

Is Your Prescription Within the Treatable Range?

A LASIK procedure is approved by the FDA for treating a particular range of refractive issues. In order for you to qualify, your prescription must meet the following requirements:

  • Nearsightedness (myopia): Up to about – 12.00 diopters
  • Farsightedness (hyperopia): up to about +6.00 diopters
  • Astigmatism: up to about 6.00 diopters

Unless your prescription falls within these ranges, LASIK probably won’t completely correct your vision. Actually, it might even carry a bigger risk. For this reason, our experienced eye doctors will go over your present eyeglasses or contact lens prescription and make a comparison with the ability of the laser system we use at our office. There might be other good choices to consider if your prescription is higher. Here at Golden Vision, we can then decide which type of procedure will work best according to your own prescription.

Has Your Vision Been Stable for at Least One to Two Years?

Your vision prescription must remain stable, hasn’t changed very much for at least a year or two, to qualify for LASIK. If your eyesight continues to change, you still could need glasses or even be re-treated later on.

Your eye doctor will go over your prescriptions for the last year or two. Consistency is what he’ll be looking for. The change should not be more than 0.50 diopters each year. For this reason, LASIK isn’t usually suggested for people younger than 18 because their eyes are continuing to develop. People in their early twenties should also be sure that their prescription is completely stable before they decide to have LASIK.

Are Your Eyes Healthy Enough to Undergo Lasik Surgery?

Besides the condition of your corneas, your general health is also part of the doctor’s decision to determine if LASIK would be right for you. The thorough exam conducted by your eye doctor will highlight any conditions that might complicate the surgery itself or even your healing ability. Here are some of the conditions that your doctor will be looking for:

  • Dry eye syndrome that can get worse post LASIK
  • Keratoconus, a thinning of the cornea, a condition that worsens with the passage of time
  • Glaucoma or increased eye pressure
  • Cataracts and any other issues concerning your eye’s lens
  • Any abnormal retinal issues or other conditions that aren’t normal

If you have a real problem with dry eye, your eye doctor could suggest getting it treated before even thinking about LASIK because this procedure could lower tear production temporarily. If you have keratoconus, your doctor won’t advise you to have LASIK since your cornea is already structurally impaired. At your Golden Vision Appointment, your doctor will go over all findings in easily understood terms so that you have a good understanding of the general health of your eyes and a path forward.

Are There Any Medical or Lifestyle Factors That Could Affect Your Results?

Your general health and everyday lifestyle choices play a pivotal role in determining your LASIK eligibility as much as the measurements of your eyes. There are also certain general health conditions you may have and medications you are taking that play into your post-op surgery. For these reasons, your doctor will look into your complete health history at your appointment.

Some of the factors that come into play could be autoimmune diseases like lupus or rheumatoid arthritis. Also, some prescription medications like corticosteroids that affect healing are considered. If a woman is pregnant or breastfeeding that could change your prescription temporarily and is also taken into consideration. Any contact sports that you’re involved in can also put you in the higher risk population since you might be at a higher risk of eye injury after having the surgery. It’s very important to be completely open with your doctor about your health background so that you receive personally tailored recommendations for your treatment according to your own conditions.

What Happens if You Do Not Qualify Right Now for Lasik?

If you don’t qualify for LASIK at your first appointment, it doesn’t mean that you will never be able to have it. Some of those who don’t qualify the first time can look into the reasons for the disqualification, and once those issues are cleared up or treated, you can try to be qualified later on. For example, you could be getting treatment for your dry eye problem, your prescription might stabilize, or a problem with your physical health can be managed so that down the road, you may be able to qualify.

Even if LASIK isn’t for you, there are other procedures that might very well be. PRK, LASEK, SMILE, and soft implantable Collamer lenses (ICLs) are all good choices that work well for those whose corneas are on the thinner side. Another option might be a higher prescription. Here at Golden Vision, you leave your appointment with a clear idea of how to go forward. Our team is dedicated to helping you choose the best possible and safest solution for correcting your vision.

FAQs

A complete LASIK evaluation generally takes about an hour or two. During the exam, your doctor will take several tests. They include mapping of your cornea, measuring your pupil and giving you an exam with dilated eyes. For these reasons, it is recommended that you plan to have someone drive you home because your eyesight will most likely be blurry from the eye drops used for the dilation.
In many cases, LASIK can certainly treat astigmatism. Today’s laser technology is quite good at correcting irregular curvature of the cornea, which is the cause of astigmatism. Your eye care professional will evaluate the degree and pattern of your astigmatism and decide if it is within the range of treatment for the equipment at their own office.
For LASIK, most eye surgeons want their patients to be at least 18 years old. Some, however, would rather have their clients wait until they are in their middle twenties to be sure that their prescription has remained completely stable. There is no upper age limit. Older patients might also be checked for early stages of cataracts. This can influence the recommendation for treatment.
Although LASIK can correct your intermediate and distance vision, it cannot stop the normal aging process of presbyopia. If someone is over 40, they still may need glasses for reading after LASIK for close work. Some people choose a technique called monovision. This corrects one eye for near and the other one for distance vision. During your appointment, your doctor will go over these with you.
For most people, there is quite an improvement in their eyesight within 24 to 48 hours after their surgery. Most people get full vision correction within several weeks. The healing time varies for each person. Some people might have fluctuating vision, halos, or glare during the first few weeks afterwards until their eyes can adjust. Your doctor will schedule future appointments to follow up and watch your improvement while also addressing any concerns you may have.

Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your eye care professional or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read on this website.

Medically Reviewed by Our Content Review Committee

This article has been reviewed for accuracy by the licensed optometrists at Golden Vision, including
Timothy Fries, OD, Stephanie Tsang, OD, and Eric Leung, OD. To learn more about our editorial standards and review process, visit our Content Review Committee page.