LASIK Age Requirements: Minimum Age and Best Age for Surgery

FDA Minimum Age: 18

The FDA has approved LASIK for patients 18 years of age and older. This minimum reflects the need for the cornea to be fully developed and the visual system to be mature before permanent laser reshaping. No FDA-approved LASIK laser is indicated for patients under 18, and performing LASIK on minors would constitute off-label use that most responsible surgeons decline.

Why Patients Under 21 Often Should Wait

While the legal minimum is 18, many ophthalmologists and refractive surgery guidelines recommend waiting until at least age 21 — and sometimes 25 — before proceeding with LASIK. The reason is prescription stability: refractive errors (particularly myopia) often continue progressing through the late teens and into the mid-20s. If LASIK is performed while the prescription is still changing, vision may deteriorate again within months or years, requiring an enhancement or glasses.

Studies show that myopia progression rates slow significantly by age 24–25 for most people. Performing LASIK at 21 on a prescription that has changed more than 0.50 D in the past year is generally considered premature by most academic refractive surgery centers.

The Stable Prescription Requirement

Regardless of age, most surgeons require the prescription to have been stable for at least 12 months (ideally 24 months) before LASIK. Stability is typically defined as no change greater than 0.50 diopters in sphere or cylinder over the preceding year. If your prescription changed more than this amount at your last annual exam, most surgeons will recommend waiting another year before re-evaluating.

Ask your optometrist to compare your current prescription with the one from 12 and 24 months ago to assess stability. Your prescriptions are part of your medical record and should be available upon request.

Ideal Age for LASIK: 25 to 40

The sweet spot for LASIK is roughly ages 25 to 40. In this window:

• Prescriptions have typically stabilized and are no longer progressing significantly
• The cornea is fully mature
• Presbyopia has not yet developed, so both distance and near correction can be achieved with standard (non-monovision) LASIK
• Healing and neuroadaptation tend to be efficient
• The patient will benefit from clear vision without glasses for decades before age-related changes occur

Age 40+ and Presbyopia Considerations

Patients over 40 are still excellent LASIK candidates for distance vision correction, but presbyopia changes the planning conversation. After 40, the crystalline lens stiffens progressively, making near vision (reading) more difficult regardless of whether LASIK is performed. Standard LASIK that corrects both eyes fully for distance will result in the need for reading glasses at the same rate as the general population.

Options for patients over 40 include: distance-only LASIK with acceptance of reading glasses; monovision LASIK which corrects one eye for near to reduce reading glass dependence; or refractive lens exchange which replaces the natural lens with a multifocal IOL. See LASIK after 40 for a full guide.

Is There an Upper Age Limit for LASIK?

There is no absolute upper age limit for LASIK. Patients in their 50s, 60s, and even 70s have successfully undergone LASIK when their corneas, prescriptions, and ocular health meet the necessary criteria. However, older patients are more likely to have developed conditions that affect candidacy: cataracts, corneal changes, or dry eye that may worsen post-operatively. For patients over 50, refractive lens exchange (RLE) is often a better option than LASIK because it simultaneously corrects vision and eliminates the future need for cataract surgery.

Age Summary Table

Age Range	LASIK Status	Key Consideration
Under 18	Not eligible	No FDA-approved indication
18–20	Eligible but often should wait	Prescription may still be changing
21–24	Eligible with stable Rx	Confirm 12–24 months of stability
25–40	Optimal age range	Best outcomes, full benefit period
40–50	Excellent candidates	Presbyopia planning needed
50+	Candidates with caveats	RLE may be more appropriate