Do I Still Need Glasses After LASIK? Our Optometrist Answers

The Truth About Vision and Glasses Before BGN Surgery

Hello. This is BGN Eye Clinic Jamsil Lotte Tower.

One of the most common questions during consultations is whether glasses are still needed after LASIK. Hearing that some people wear glasses again after LASIK naturally raises concerns about side effects or vision loss. Since your goal is to be free from glasses, this is a completely understandable worry.

I always give a straightforward answer: Most of our clients enjoy their daily lives perfectly well without glasses. However, vision can fluctuate depending on your eye condition over time. Understanding this beforehand ensures greater satisfaction. Today, I’ll explain whether you might need glasses after surgery and the reasons behind it.

Diopters and Visual Acuity: Aren't They the Same?

Many who consider LASIK come to us out of frustration with glasses. Those with high myopia or astigmatism often have very high expectations. Sometimes, clients ask, "Why isn't my vision 20/15?" or "Can you make my vision 20/10?"

People often confuse diopters (prescription power) and visual acuity. A '0.0 diopter' is a refractive measurement indicating almost no refractive error, like myopia or astigmatism. Simply put, it means your eyes have virtually no refractive power left to correct. You don't need prescription glasses.

However, visual acuity is closer to the "resolution" your eyes and brain process. Even with the exact same diopter, visual acuity can vary from person to person. A score like '20/20' or '20/15' measures how well you can actually identify an eye chart. This is a combined result of your eye's optics, brain recognition, optic nerve response, concentration, and even the testing environment.

While most clients achieve a visual acuity of 20/20 or better post-surgery, the extent of recovery varies slightly based on pre-operative eye conditions and corneal thickness. Because everyone is different, the final result might not always be an absolute '0.0 diopter.' This isn't a failure of the surgery; rather, it is a deliberate adjustment to achieve the optimal outcome within the safest possible correction range. The most critical part of surgery is aligning a client's 'expectations' with 'reality' beforehand.

Can I Wear Glasses Again After LASIK?

You may have read reviews saying, "I got LASIK but ended up wearing glasses again." Some clients worry this means the surgery failed or caused side effects. In most cases, clients achieve and maintain sufficient vision for a glasses-free lifestyle. However, there are scenarios where you might wear glasses again.

Main Reasons for Wearing Glasses Again

• • 1. Residual Prescription
  If your pre-operative prescription was extremely high or your corneal thickness is limited, we may not correct 100% of your refractive error. Instead, we leave a slight residual prescription to ensure safety. In these cases, some individuals opt for supplemental glasses when they need sharp distance vision, such as when driving at night.
• • 2. Natural Vision Changes Over Time
  The eyes do not stop aging after surgery. Factors like your work environment, eye strain, and natural aging can cause vision changes years down the line. Just as the body changes over time, this is a natural phenomenon.
• • 3. Assisting Near Vision (Presbyopia)
  Presbyopia begins in our 40s. Even if you have been highly satisfied with your post-surgery vision, you might eventually notice that nearby text looks blurry. In such cases, reading glasses or blue-light-blocking glasses are commonly used to assist near vision.

3 Frequently Asked Questions (FAQ)

• • Q. Will I never need glasses again for the rest of my life after LASIK?
  A. Most people live comfortably without glasses, but lightweight glasses can sometimes be helpful depending on the situation.
• • Q. Is the surgery a failure if I have to wear glasses?
  A. As mentioned earlier, it could be due to natural changes or a planned outcome based on the safety goals set before surgery.
• • Q. Do I get to choose my corrected visual acuity?
  A. We target the optimal visual acuity within medically safe limits. We explain this thoroughly during your consultation. Please ask if you have any questions!

Our Optometrists Are Here to Help You Understand. Don't Worry!!

Test data is filled with numbers like 'Myopia -4.50', 'Astigmatism -1.25', and 'Corneal Thickness 520μm'. However, predicting post-operative satisfaction based solely on these numbers is difficult. That’s why we consider various factors such as your reactions, subjective sensitivity, lifestyle, and occupation alongside the machine measurements.

For our clients, how comfortably they can live their desired lifestyle is much more important than raw clinical numbers. It is completely natural to wonder, "Will I need to wear glasses again?" while considering LASIK.

Every eye is different, and so are the lifestyles and goals of each individual. Therefore, we believe that preparing for the right surgery through accurate testing, detailed consultation, and pre-operative discussion is the most critical step. We are here to guide you through this entire journey. If you have any questions before LASIK, please feel free to ask. Thank you.