Can Your Prescription Come Back After LASIK?
LASIK can significantly reduce your dependence on glasses and contact lenses, but it does not guarantee that you will never need vision correction again. Some people may notice changes in their prescription months or years after LASIK.
So, can your prescription come back after LASIK? Yes, it is possible, but it does not happen to everyone. There are several reasons your vision may change after surgery, and not all of them mean that LASIK has “worn off.”
What Does It Mean When Your Prescription Comes Back?
When vision becomes less clear after LASIK and a new refractive error develops, doctors may refer to this as refractive regression.
Regression means that the eye has shifted somewhat back toward its original prescription. Research has identified several factors that may contribute to regression, including the amount of nearsightedness or farsightedness corrected, corneal changes, and changes in the eye over time.
This is different from having blurry vision shortly after surgery. Vision can fluctuate during the first few months while the eyes stabilize. The FDA notes that it can take three to six months for vision to fully stabilize after LASIK.
Why Can Your Prescription Change After LASIK?
There are several possible reasons.
1. Refractive regression
Some patients experience a gradual shift in their prescription after LASIK. This is more commonly associated with larger preoperative prescriptions, particularly higher levels of myopia or hyperopia.
2. Your eyes continue to change
LASIK reshapes the cornea to correct an existing refractive error. It does not stop the natural processes that can change your eyes over time.
For example, some people may develop changes in their vision as they get older.
3. Presbyopia
Presbyopia is the age-related loss of the eye's ability to focus on nearby objects. It can happen even if you had excellent distance vision after LASIK.
That means someone who had LASIK in their 30s may eventually need reading glasses in their 40s or later. This does not necessarily mean their LASIK result has failed.
4. Your original prescription may not have been completely corrected
LASIK does not always eliminate every bit of refractive error. Some patients may still need glasses or contacts after surgery, even if their vision has improved significantly.
Does This Mean LASIK Wears Off?
No. LASIK does not simply wear off like a temporary treatment.
The cornea is permanently reshaped during the procedure. However, your eyes can continue to change after surgery, and some patients experience refractive regression.
Think of LASIK as correcting the refractive error you have at the time of treatment. It cannot prevent every future change to your eyes or vision.
Can You Need Glasses Again After LASIK?
Yes. Some people may eventually need glasses again, but that does not necessarily mean they have returned to their original prescription.
You may need glasses for specific situations, such as:
- Reading
- Driving at night
- A small residual prescription
- Changes in vision related to aging
The FDA also notes that some patients may still need glasses or contact lenses after refractive surgery, and additional treatment may not always be appropriate or possible.
Can LASIK Be Done Again If Your Prescription Comes Back?
In some cases, an additional procedure called an enhancement may be considered. However, this is not automatically recommended for everyone.
Your prescription needs to be stable, and your surgeon needs to determine whether your cornea has enough tissue and remains healthy enough for another procedure. A thorough eye evaluation may include corneal measurements and topography or tomography before an enhancement is considered.
The FDA recommends waiting until measurements are stable before considering additional surgery.
When Should You Have Your Vision Checked After LASIK?
If your vision becomes blurry after initially seeing well, don't assume that your prescription has simply come back.
A change in vision can have different causes, and an eye doctor can determine whether you are experiencing refractive regression, dry eye-related fluctuations, an age-related change, or another eye condition.
If you experience new or worsening vision changes, severe pain, or other unusual symptoms, contact your eye doctor promptly.
How Long Can LASIK Results Last?
For many patients, LASIK provides long-lasting improvement in distance vision. However, there is no way to guarantee that your prescription will never change again.
Your age, original prescription, eye health, and other individual factors can all influence how your vision changes over time.
That is why a good LASIK evaluation is about more than simply checking your prescription. Your eye health, corneal shape, corneal thickness, and overall suitability for the procedure all matter.
Considering LASIK in Saginaw, MI?
If you're considering LASIK, the best place to start is with a comprehensive evaluation rather than assuming that your prescription automatically makes you a candidate.
At MiVision Eye Care, Dr. Melanie Mihlstin takes the time to evaluate your eyes and discuss whether LASIK is appropriate for your vision, eye health, and long-term goals. If LASIK isn't the right option, your evaluation can also help identify other vision correction options that may be more suitable.
The goal isn't simply to get you out of glasses. It's to determine which option makes sense for your eyes and your vision.