LASIK and LASEK both use the same type of laser to reshape your cornea and correct vision, but they differ in how the surgeon accesses the cornea before that laser is applied. LASIK creates a deeper flap in the corneal tissue, while LASEK works only on the thin outer skin of the eye. That single difference affects everything from recovery time to who qualifies for each procedure.
How Each Procedure Works
In LASIK, the surgeon uses a precision blade or a femtosecond laser to cut a thin flap in the cornea’s outer layers, including both the surface skin (epithelium) and part of the structural tissue beneath it. That flap is lifted like a hinged door, the excimer laser reshapes the exposed tissue to correct your prescription, and the flap is laid back into place. It adheres naturally without stitches.
LASEK takes a more conservative approach. Instead of cutting into the structural tissue, the surgeon applies a dilute alcohol solution to the surface of the eye for about 30 seconds. This loosens only the epithelium, the paper-thin outermost layer of the cornea. A surgical spatula gently peels that layer aside, the same excimer laser reshapes the cornea underneath, and the epithelial sheet is repositioned over the treatment area. A soft contact lens is placed on the eye as a bandage while the surface heals.
The reshaping step is identical in both procedures. The difference is purely about the “door” the surgeon creates to reach the cornea. LASIK’s door is thicker and includes structural tissue. LASEK’s door is just the surface skin, which regenerates on its own regardless.
Recovery: Days vs. Weeks
This is where the two procedures diverge most noticeably. LASIK recovery is fast. You may feel discomfort for four to six hours after surgery, but most people notice dramatically improved vision by the next morning. Surgeons typically schedule a follow-up the day after surgery, and many patients are cleared to drive at that appointment. You’ll want to rest your eyes and avoid screens for the first 24 hours, but returning to work within a day or two is common.
LASEK recovery is a different experience. Because the surface of the cornea needs to regenerate, you can expect blurred vision and moderate discomfort, including light sensitivity, for the first 24 hours. The epithelium takes about a week to heal, and most people need that full week off work. Vision improvements typically become noticeable around midweek, but full stabilization takes several weeks as the corneal surface smooths out. The bandage contact lens usually stays on for four to five days.
Pain and Discomfort
LASEK involves more postoperative discomfort than LASIK, largely because the corneal surface is left to regenerate rather than being protected by a repositioned flap. Research comparing surface ablation techniques found that pain levels in the first couple of hours can vary, but by four hours after surgery, patients across all surface procedures reported similar levels of discomfort. By 24 hours, pain had generally dropped to minimal or none. Still, that first week with LASEK can feel like having something gritty in your eye, and your surgeon will typically prescribe pain-relief drops to manage it.
Visual Outcomes
Both procedures deliver excellent long-term vision correction. In a Cochrane systematic review comparing the two for nearsightedness, virtually all eyes in both groups achieved 20/40 vision or better at six months, which is the legal driving standard in most places. LASIK had a modest edge at the sharper end: about 87% of LASIK eyes reached 20/20 compared to roughly 68% of LASEK eyes at the six-month mark. Over time, as LASEK eyes finish stabilizing, that gap narrows. The final prescription accuracy is comparable for most patients.
The practical takeaway: LASIK gets you to your best vision faster. LASEK takes a slower, more gradual path to a very similar destination.
Dry Eye Risk
Dry eye is the most common side effect of both procedures, but LASIK causes it more frequently. Because the LASIK flap cuts through corneal nerves that signal your eye to produce tears, nearly all LASIK patients experience some degree of dryness in the weeks after surgery. Published prevalence rates range from 36% to 75% in the early postoperative period, and 8% to 48% of patients still report symptoms six months later.
LASEK and other surface procedures cause significantly less tear disruption because the nerve-rich deeper corneal tissue is left intact. Studies have found dry eye complaints after surface ablation closer to 37%. If you already deal with dry eyes, this difference may steer the recommendation toward LASEK.
Corneal Haze After LASEK
One complication unique to LASEK is corneal haze, a mild cloudiness that can develop during healing as the surface tissue regenerates. It’s more of a concern with higher prescriptions. Surgeons prevent it by briefly applying a dilute solution during the procedure that inhibits scar-forming cells. Application times as short as 12 to 30 seconds have been shown to maintain corneal clarity while minimizing any effects on surrounding tissue. With this precaution, significant haze is uncommon.
Flap Risk and Active Lifestyles
The LASIK flap is the procedure’s greatest convenience and its most notable vulnerability. Although modern flaps are stable and complications are rare, the flap never fully fuses back to the underlying tissue. Blunt trauma to the eye can displace it even years after surgery. Case reports document flap displacement five or more years post-LASIK following direct eye impact.
For most people, this is a negligible risk. But if you box, practice martial arts, play rugby, or work in military or law enforcement roles with regular physical contact, even a rare chance of flap displacement can be unacceptable. LASEK avoids this problem entirely because no structural flap is ever created. Once the epithelium heals, the corneal surface is intact and continuous, with no weak point vulnerable to impact.
Who Qualifies for Each
LASIK requires a minimum corneal thickness of about 500 microns (roughly half a millimeter) because creating the flap consumes a meaningful portion of that tissue. If your corneas are thinner than that, there may not be enough structural tissue left after the flap and laser reshaping to keep the cornea stable long term.
LASEK has become the preferred option for patients with thinner corneas precisely because it doesn’t remove structural tissue for a flap. Only the surface epithelium is moved aside, preserving more of the cornea’s load-bearing layers. Beyond thin corneas, LASEK may also be recommended for people with larger pupils, certain corneal surface irregularities, or professions and hobbies that involve impact risk.
When corneal thickness is adequate and there are no lifestyle concerns pushing toward one option, the choice often comes down to how you feel about the recovery tradeoff: LASIK’s fast turnaround versus LASEK’s slower healing but reduced risk of dry eye and flap complications.
Cost Comparison
Both procedures fall in the same price range, typically $3,000 to $6,000 for both eyes. LASIK tends to cost slightly more, partly because the femtosecond laser used to create the flap adds to the equipment expense. Neither procedure is covered by most insurance plans since they’re considered elective. Many clinics offer financing, and the cost usually includes pre-surgical evaluation, the procedure itself, and a set number of follow-up visits.