Medically reviewed by Krishna Surapaneni, MD, board-certified ophthalmologist and cataract, cornea, and refractive surgeon at SuraVision in Houston.
You have decided you want to stop depending on glasses and contacts. Now you are stuck on the next question: LASIK or PRK?
Here is the short answer. Both procedures use the same laser to reshape the front surface of your eye, and both aim for the same result. They differ in how the surgeon reaches the tissue that gets reshaped, which changes your first two weeks quite a bit. For most people the choice is not really a preference. It is decided by the measurements of your own cornea. This guide explains what actually separates them, so that when a surgeon tells you which one fits your eyes, you understand why.
What LASIK Does
In LASIK, the surgeon creates a thin, hinged flap in the surface of the cornea, lifts it, reshapes the tissue underneath with a laser, and lays the flap back down. The flap seals on its own and acts like a natural bandage.
The reshaping takes seconds. The whole visit is short, and you are awake with numbing drops the entire time. Because the surface layer is preserved as a flap, comfort returns quickly and vision usually sharpens within a day or two.
What PRK Does
PRK reaches the same tissue a different way. Instead of making a flap, the surgeon gently removes the cornea’s thin outer skin layer, called the epithelium, and reshapes the tissue directly. A soft bandage contact lens goes on afterward while that surface layer grows back over the next few days.
Everything about the laser treatment itself is the same. The difference is that your eye has to regrow its surface, and that takes time you can feel.
The Real Difference Is Your First Two Weeks
This is the part patients care about most, and it is worth being plain about.
After LASIK, most people are comfortable within hours and seeing well the next morning. Many go back to desk work in a day or two.
After PRK, the first three to four days are the hard part. Your eye is sore and light-sensitive while the surface heals under the bandage lens, and your vision is hazy. Comfort improves once the surface closes. Sharp vision comes in more gradually over weeks, and it can take one to three months to fully settle, according to the American Academy of Ophthalmology.
That is a real trade, and it deserves an honest description rather than a soft one. PRK asks more of you up front. What it gives back is a cornea with no flap in it. For some eyes, that matters a great deal.
Is PRK Safer Than LASIK?
This is the most searched question in the comparison, and it has a careful answer.
Neither procedure is safer in a blanket sense. Both have long track records and both carry risks that are uncommon but real, including dry eye, glare and halos at night, undercorrection or overcorrection, and the possibility of needing a touch-up. You can read the American Academy of Ophthalmology’s overview of LASIK risks for more detail.
What is true is that PRK removes one specific category of risk: anything involving the flap. Because no flap is made, there is no flap to wrinkle, dislodge, or heal poorly. Flap problems with modern all-laser LASIK are rare, but they are not impossible, and a flap remains a permanent feature of the cornea afterward.
PRK also leaves more corneal tissue behind, which matters if your cornea is on the thin side. That is why the honest way to put it is this: PRK is not universally safer, but for certain corneas it is the safer choice, and a surgeon should be able to tell you which category you fall into and why.
Do You End Up Seeing the Same?
Yes, generally. Once healing is done, LASIK and PRK produce comparable vision for the same prescription, and both are FDA-approved laser vision correction procedures. Neither one is a shortcut to a better result. They are two roads to the same place, one smoother early on and one that protects the cornea’s structure.
Both can also treat astigmatism, which surprises a lot of people. If astigmatism is your main issue, that alone does not push you toward one procedure or the other.
Neither procedure stops your eyes from aging. If you are near or past 40, you may still want reading glasses for small print later, no matter which one you choose. Your surgeon should raise this before surgery, not after.
Who Each Procedure Tends to Fit
PRK tends to be the better fit when:
- Your cornea is thinner than LASIK comfortably allows.
- Your corneal shape is a little irregular on topography.
- You have a job or sport with a real chance of a blow to the eye, such as boxing, martial arts, or certain military and first-responder roles, where a flap is a consideration for life.
- You have had certain prior eye surgery or scarring.
- You have meaningful dry eye, which LASIK can aggravate more in the early months.
LASIK tends to be the better fit when:
- Your cornea has plenty of thickness and a regular shape.
- You need to be back at work and functional fast.
- Your tear film is healthy.
Both require a prescription that has been stable for about a year, healthy eyes with no active disease, and realistic expectations about what surgery can and cannot do.
If you have already been told your corneas are too thin for LASIK, you have options. Read our guide on the best LASIK alternatives for thin corneas, and see our PRK page for how the procedure works at SuraVision. Some people who are not candidates for either laser procedure do very well with the EVO ICL, an implantable lens that removes no corneal tissue at all.
You can also read more about how modern technology has lowered LASIK’s risks on our page about how safe LASIK is.
What About Cost?
The two procedures usually cost about the same, because the expensive parts, the laser time and the surgeon’s evaluation, are the same. PRK is not the budget version of LASIK, and any clinic pricing it as a discount option is worth a question or two.
Neither is typically covered by insurance, since both are elective. What you should expect from any surgeon is your exact price in writing before you commit, not a “starting at” number that moves later. See how we handle pricing on our LASIK cost page.
How the Decision Actually Gets Made
Very little of this is decided by preference. It is decided by measurements: corneal thickness, corneal shape mapped on topography, your prescription, your tear film, and how you use your eyes at work and in sport.
A proper evaluation produces a recommendation with a reason attached. If a clinic tells you which procedure you are getting without showing you your corneal map, that is a good moment to get a second opinion. And if you have been told “no” somewhere else, that answer may have been about LASIK specifically, not about laser vision correction as a whole.
Get a Straight Answer About Your Own Eyes
Ready to take the next step toward clearer vision? Schedule a consultation with SuraVision to discuss your options and learn more about LASIK and PRK. Dr. Sura will map your corneas, tell you honestly which procedure fits your eyes, and give you your exact price in writing. Call us at 713-730-2020 or book your appointment online. If neither laser procedure is right for you, we will walk you through the options that are.
Frequently Asked Questions
Is PRK safer than LASIK?
Neither one is safer across the board. Both have long track records and both carry uncommon but real risks such as dry eye, night glare, and undercorrection. PRK does remove flap-related risk entirely, since no flap is made, and it preserves more corneal tissue. For a thin or irregular cornea, that makes PRK the safer choice for that particular eye. Your corneal measurements decide it, not a general rule.
Which is better, PRK or LASIK?
Neither is better in general. They use the same laser and produce comparable vision once healing is complete. LASIK is far more comfortable in the first week. PRK avoids a corneal flap and suits thinner or irregular corneas. The right answer depends on your cornea, your tear film, and your daily life, which is what a consultation sorts out.
How much does PRK cost compared with LASIK?
The two usually cost about the same, since the laser time and the surgeon’s evaluation are the same. PRK is not a discount version of LASIK. Neither is typically covered by insurance because both are elective. You should get your exact price in writing before you decide.
Does PRK fix astigmatism?
Yes. Both PRK and LASIK can treat astigmatism along with nearsightedness and farsightedness, within the range approved for the laser being used. Astigmatism alone does not decide which procedure you need.
Is PRK painful?
PRK is done with numbing drops, so the procedure itself is not painful. The first three to four days afterward are uncomfortable while the surface of the eye heals. Expect soreness, light sensitivity, and watering, managed with a bandage contact lens, drops, and medication your surgeon prescribes. It eases once the surface closes.
How long does PRK last?
The reshaping is permanent. Your vision can still change over the years for the same reasons anyone’s does, including presbyopia after about age 40 and cataracts later in life. A small number of people need a touch-up. PRK can generally be repeated if that is needed, which is one advantage of not having a flap.
Can I choose LASIK if my surgeon recommends PRK?
Ask why the recommendation was made, and ask to see your corneal map. If PRK is recommended because your cornea is thin or irregular, doing LASIK anyway would mean accepting a risk the measurements are warning you about. A good surgeon will explain the reason rather than just the verdict, and will tell you if a different procedure such as the EVO ICL fits you better.