Guide
LASIK vs SMILE vs PRK vs ICL
How the main vision correction procedures differ in method, recovery, risks and typical cost, and which kind of patient each one suits best.
The short version
All four procedures aim to reduce or remove your need for glasses or contacts. LASIK, SMILE and PRK reshape the cornea with a laser. ICL adds a lens inside the eye without removing tissue. The right choice depends on your prescription, corneal thickness and shape, dryness, age and lifestyle, which a consultation measures.
Side-by-side
| LASIK | SMILE | PRK | ICL | |
|---|---|---|---|---|
| How it works | Laser reshapes cornea under a thin flap | Laser removes a small disc of tissue through a 2 to 4 mm incision | Surface layer removed, laser reshapes, surface regrows | Thin lens implanted in front of your natural lens |
| Best for | Most mild to moderate prescriptions | Nearsightedness and astigmatism | Thin corneas, contact sports, some dry eyes | High prescriptions, thin corneas |
| Recovery | Clear vision in 1 to 2 days | 1 to 3 days | 1 to 2 weeks, uncomfortable for a few days | 1 to 3 days |
| Flap | Yes | No | No | No |
| Reversible | No | No | No | Lens can be removed |
| Typical US price per eye | About $1,500 to $3,000 | Often similar to or above LASIK | Similar to LASIK | Usually higher, often $3,500 and up |
Prices vary widely by city, technology and what is included; treat them as rough ranges.
Risks to discuss
- Dry eye, usually temporary but sometimes lasting
- Glare, halos and starbursts at night
- Under- or over-correction, sometimes needing an enhancement
- Flap complications with LASIK, rare with modern lasers
- Corneal haze after PRK, uncommon
- Cataract or raised eye pressure after ICL, uncommon
The FDA advises patients to understand risks, have realistic expectations and choose a surgeon who performs a thorough screening.
Over 50? Consider lens surgery
After about 50, the natural lens starts to stiffen and cloud. Refractive lens exchange replaces it with an artificial lens that can correct distance and, with premium lenses, some near vision, and it prevents a future cataract.
How to choose a surgeon
Ask how many procedures the surgeon performs, which tests they run before deciding, which procedures they offer (so they are not limited to one), what happens if you need an enhancement, and who handles follow-up. A good clinic will tell you if you are not a candidate.
Questions people ask
Which is safer, LASIK or PRK?
Both have strong safety records for suitable candidates. PRK avoids a corneal flap, so it suits thin corneas and contact sports, but recovery is slower and more uncomfortable.
Is SMILE better than LASIK?
SMILE uses a small incision instead of a flap, which may mean less dry eye for some people. LASIK treats a wider range of prescriptions, including farsightedness in most countries. Results are similar for suitable patients.
How long does LASIK last?
The correction is permanent, but eyes still age. Most people need reading glasses in their mid-40s or later, and a minority need an enhancement.