What Is PRK?
PRK is a laser-based refractive surgery that corrects vision by reshaping the cornea — similar to LASIK — but without creating a corneal flap.
PRK is commonly used to treat:
- Nearsightedness (myopia)
- Farsightedness (hyperopia)
- Astigmatism
Instead of creating a flap, PRK works directly on the surface of the cornea.
How PRK Works
PRK involves two main steps:
- Removing the surface layer of the cornea (epithelium)
- Reshaping the underlying corneal tissue with a laser
The epithelium naturally regenerates over several days after surgery.
Because there is no flap, PRK preserves corneal strength and structure.
What Happens During PRK Surgery
PRK is typically:
- Performed in an outpatient setting
- Completed in about 10–15 minutes per eye
- Done using numbing eye drops
Patients are awake during the procedure. Most feel pressure but no pain during the laser portion.
PRK Recovery: What Makes It Different
Recovery after PRK is longer than LASIK or SMILE, which is one of the most important things patients need to understand.
Typical PRK recovery includes:
- Several days of discomfort or irritation
- Blurry vision during early healing
- Gradual vision improvement over weeks
A temporary contact lens is placed to protect the eye while the surface heals.
Why Surgeons Still Recommend PRK
PRK is often recommended when:
- Corneas are thin
- There is a higher risk of flap complications
- Patients participate in contact sports
- Corneal shape makes LASIK less safe
In these cases, PRK can be the safest option.
PRK vs LASIK
PRK
- No corneal flap
- Longer recovery
- Preserves corneal strength
LASIK
- Faster visual recovery
- Minimal discomfort
- Requires adequate corneal thickness
Final visual outcomes are often similar once healing is complete.
PRK vs SMILE
PRK
- Surface-based
- Longer healing
- Broader range of prescriptions
SMILE
- Small incision
- Faster recovery
- Limited to certain prescriptions
Choice depends on anatomy and goals.
Who Is a Good Candidate for PRK?
PRK may be ideal for patients who:
- Have thin corneas
- Have irregular corneal shape
- Are at higher risk for eye trauma
- Are not good LASIK or SMILE candidates
A thorough evaluation determines suitability.
Discomfort and Pain After PRK
Unlike LASIK or SMILE, PRK involves:
- Moderate discomfort for several days
- Light sensitivity
- Grittiness or burning sensations
Pain is managed with medication and typically improves as healing progresses.
Vision Improvement Timeline After PRK
Vision after PRK improves gradually:
- Blurry vision initially
- Functional vision within 1–2 weeks
- Continued improvement over 1–3 months
Final results can take longer to stabilize compared to LASIK.
Is PRK Safe?
PRK has a long history of safety and effectiveness when performed on appropriate candidates.
Because there is no flap:
- Risk of flap-related complications is eliminated
- Corneal integrity is preserved
Serious complications are uncommon.
Long-Term Results of PRK
Once healing is complete:
- Vision outcomes are comparable to LASIK
- Results are stable long term
- Vision changes over time are usually age-related
PRK permanently reshapes the cornea.
PRK and Dry Eye
PRK may be preferred for patients with:
- Existing dry eye
- Concerns about corneal nerve disruption
Dry eye symptoms may still occur but are often manageable.
Setting Realistic Expectations
PRK requires patience. Patients who understand:
- The longer recovery timeline
- Temporary discomfort
- Gradual vision improvement
tend to be more satisfied with their outcome.
Why PRK Is Still Relevant
PRK is not a fallback — it is a deliberate choice when anatomy or lifestyle makes other options less ideal.
Choosing PRK often reflects careful surgical judgment.
Surgeon-Led PRK Education You Can Trust
At Eye Surgery Today, PRK education is grounded in real clinical decision-making. Our goal is to help patients understand when PRK is the safest, smartest option — and what to expect every step of the way.
