Yes, it is possible for your vision to change after LASIK, but the procedure itself typically provides long-lasting results.
These changes aren’t usually due to the LASIK surgery but rather to natural ageing processes or unrelated eye conditions.
LASIK (Laser-Assisted in Situ Keratomileusis) is one of the most sought-after and effective surgical treatments for refractive errors such as nearsightedness, farsightedness, and astigmatism. Designed to reshape the cornea and correct vision, LASIK offers patients the chance to live without glasses or contact lenses. However, many wonder if their improved vision is permanent or if their eyes can “go bad” again over time. Let’s explore this important question.
Understanding LASIK and What It Does
To understand why some people may experience vision changes post-LASIK, it helps to know how the procedure works:
- LASIK involves the use of a precision laser to create a thin flap in the cornea. The laser reshapes the cornea underneath, improving how light enters the eye and focuses on the retina, effectively correcting the patient’s refractive error.
- Once the cornea is reshaped, the flap is replaced, allowing the eye to heal naturally. Vision improvement is often noticeable within a day or two.
It’s important to note that LASIK addresses specific refractive errors—it does not prevent or cure all potential eye conditions.
How Long Do LASIK Results Last?
The results of LASIK are long-lasting for the majority of patients. Clinical studies show that the majority of patients maintain excellent vision years—even decades—after surgery. This is because LASIK changes the cornea’s shape permanently.
That said, your eyesight can still change after LASIK, but this is usually due to natural eye ageing or other factors unrelated to the surgery. Think of LASIK as a solution for correcting an existing refractive error—it doesn’t stop physiological processes like ageing or other conditions from affecting your vision in the future.
Reasons Your Vision May Change After LASIK
There are several reasons why your vision may “go bad” again after LASIK:
1. Natural Aging and Presbyopia
One of the most common causes of vision deterioration post-LASIK is presbyopia, an age-related condition that typically begins to affect people after the age of 40.
Presbyopia is a condition in which the lens of the eye loses its flexibility, resulting in difficulty focusing on nearby objects. Since LASIK reshapes the cornea and doesn’t alter the lens, this condition can still occur even if you’ve had LASIK. This is why many people who undergo LASIK in their 20s or 30s may later need reading glasses as they age.
Key point: Presbyopia is not caused by LASIK. It is an inherent aspect of the ageing process.
2. Regression of Refractive Error
Although rare, some patients may experience regression, where their vision returns to its pre-surgery state over time.
This usually happens when the initial refractive error was very high, requiring significant correction during LASIK. For example, those with severe nearsightedness (-6.00 diopters or higher) are more prone to regression compared to those with moderate refractive errors.
For these cases, a follow-up LASIK enhancement procedure may be an option to fine-tune the results and restore clear vision.
3. Developing New Eye Conditions
Other eye-related health issues can affect your vision after LASIK, including:
- Cataracts: This condition causes the lens inside the eye to become cloudy, leading to blurry vision. Cataracts are more common with age and are unrelated to LASIK.
- Glaucoma: Increased pressure in the eye can damage the optic nerve, leading to vision loss. Like cataracts, glaucoma is not caused by LASIK.
- Macular Degeneration: A condition associated with ageing that impairs central vision.
These conditions are independent of LASIK and can occur in individuals regardless of whether they’ve had laser eye surgery.
4. Lifestyle and Eye Health Habits
Your lifestyle and how well you take care of your eyes also impact your vision’s longevity after LASIK. Factors such as excessive screen time, lack of eye protection, or neglecting regular eye check-ups can lead to strain and other issues over time.
How to Maintain Your Vision After LASIK
While LASIK cannot prevent conditions like presbyopia, there are many ways to protect your eyes and maintain healthy vision longer after the surgery:
1. Regular Eye Exams
Schedule routine eye exams with your optometrist or ophthalmologist. Early detection of conditions such as presbyopia, cataracts, or glaucoma allows for timely management and treatment.
2. UV Protection
It is recommended to always wear sunglasses with 100% UV protection when outdoors. UV rays can cause cataracts and other eye damage over time.
3. Eye-Friendly Habits
- Follow the 20-20-20 rule when working on a computer or smartphone. Every 20 minutes, focus on an object located 20 feet away for a minimum of 20 seconds.
- Stay hydrated and keep your eyes lubricated with artificial tears if you experience dryness.
4. Healthy Diet
Nutrition plays an essential role in eye health. Foods rich in omega-3 fatty acids, lutein, and vitamins A and C (like leafy greens, carrots, and fish) can support long-term vision.
5. Avoid Smoking
Smoking is a known risk factor for macular degeneration, cataracts, and other eye conditions.
6. Follow Post-Surgery Guidelines
Immediately after LASIK, it’s crucial to follow your doctor’s post-operative instructions to the letter. This ensures appropriate healing and minimises the risk of complications.
Is LASIK Right for You?
If you’re considering LASIK, discussing potential vision changes with an experienced ophthalmologist can help set realistic expectations. While LASIK delivers excellent results for the vast majority of patients, your surgeon will evaluate factors such as your age, lifestyle, and overall eye health when determining if you’re a suitable candidate.
What to Do If Your Vision Changes After LASIK
If you notice changes in your vision years after LASIK, don’t panic—there are solutions available.
- Contact Your Eye Doctor: Schedule an eye exam to identify the cause of the vision change and discuss possible treatments.
- Consider Enhancement Surgery: For those with regression or new refractive errors, a LASIK enhancement may be an option if your cornea is still healthy and thick enough.
- Explore Options for Presbyopia: Reading glasses, multifocal contact lenses, or procedures like monovision LASIK or lens replacement surgery can help with age-related vision changes.
Final Thoughts
While LASIK is a life-changing procedure that provides long-term improvement in vision, it’s essential to understand that it doesn’t protect against natural ageing or unrelated eye health issues. Your eyes may “go bad” again after surgery, but this isn’t a flaw in the LASIK procedure itself—it’s simply a reflection of the complex nature of vision and ageing.
By prioritising routine check-ups, practising healthy habits, and addressing any concerns promptly, you can enjoy clear vision and maintain eye health for the years ahead.
Thinking about LASIK or concerned about your post-surgery vision? Consult with a trusted ophthalmologist today and take control of your eye health.
