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Compare RatesIs LASIK Safe? Real Risks & Success Rates
Yes, for most patients — but "safe" means specific numbers, not a feeling. Here's the real complication data, who should be extra cautious, and how it compares to PRK.
Reviewed by Conner, Co-Founder & Research Lead
The short answer
Is LASIK safe?
Yes, for most patients. LASIK is one of the most studied elective surgical procedures in medicine, with over three decades of outcome data. Vision-threatening complications affect fewer than 1% of properly screened patients treated by a qualified surgeon, and 96% of patients report satisfaction with their outcome (AAO 2023 patient survey). "Safe" isn't a yes/no about the procedure in general — it's a real question about your specific cornea, which is exactly what pre-op screening exists to answer.
| Outcome | Rate | Typical timeline |
|---|---|---|
| Temporary dry eye | 20-30% of patients short-term | Resolves in 3-6 months |
| Need for enhancement (retreatment) | 5-10% of patients | Within 10 years, as vision naturally shifts |
| Vision-threatening complications | Under 1% of patients | With qualified surgeon + proper screening |
| Patient-reported satisfaction | 96% of patients | AAO 2023 patient survey |
The real risks, in order
What actually happens if something goes wrong
The two outcomes patients should actually weigh are temporary dry eye and the modest chance of needing a later enhancement — both are common, both are manageable, and neither is vision-threatening. Severe complications exist but are rare precisely because pre-op screening is designed to catch the corneas that shouldn't be treated before surgery, not after.
Who should be extra cautious
Safety depends on your cornea, not the procedure
Conditions like keratoconus, very thin corneas, or high astigmatism can rule out standard LASIK specifically, regardless of how safe the procedure is in general. This is the actual purpose of corneal topography during your consultation — it's a screen, not a formality.
A common follow-up question
Is PRK safer than LASIK?
Not universally — they trade different risks. PRK removes one specific LASIK risk category by not cutting a corneal flap, which is why surgeons often prefer it for thinner corneas or higher-risk lifestyles (contact sports, for example). In exchange, PRK has a longer, more uncomfortable recovery and its own separate risk profile, including corneal haze. Neither procedure is safer in every case — the right answer depends on your corneal thickness and shape. See the full procedure comparison for how LASIK, PRK, SMILE, and ICL stack up on candidacy, not just price.
Before your consultation
Questions that actually reveal safety
- What's your personal enhancement (retreatment) rate? A surgeon's own numbers matter more than the national average.
- What percentage of your patients report chronic dry eye at 12 months? Short-term dry eye is normal; ask specifically about chronic cases.
- What would rule me out during screening? A surgeon who can't clearly explain their disqualifying criteria is a red flag.
- What happens if I'm not a LASIK candidate? Ask what they'd recommend instead before you commit to anything.
Is LASIK safe?
Yes, for most patients — vision-threatening complications affect under 1% when properly screened.
What's the most common side effect?
Temporary dry eye, in 20-30% of patients short-term, usually resolved within 3-6 months.
Is PRK safer than LASIK?
Not universally — each trades a different set of risks. See the full comparison.
How do I know if I'm a safe candidate?
Only pre-op corneal mapping with a qualified surgeon can confirm it — this page is planning information, not a diagnosis.
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Disclaimer
Informational only
This page is informational only and not medical advice. Individual risk can only be confirmed by a qualified eye surgeon after a full pre-op evaluation and corneal mapping.