Dr. Callahan has been thoughtful, kind, and informative for my entire family. Her care is excellent, and we highly recommend her to anyone seeking compassionate, professional eye care.
Jaclyn Jenkins
LASIK vs. PRK: Recovery, Results, and Choosing the Right Procedure
Choosing the Right Procedure for Your Eyes
Selecting between LASIK and PRK is not simply about preference. It depends on the specific characteristics of your eyes, your lifestyle, and your health history. Our LASIK Surgeons evaluate all of these factors together to recommend the safest, most effective option for you.
LASIK is well suited for people who have healthy corneas with adequate thickness, a stable prescription for at least one year, and no significant dry eye issues. If you want the fastest return to work and daily activities with minimal post-operative discomfort, LASIK is often the better fit.
We generally recommend that patients be at least 18 years old, though waiting until your mid-twenties, when prescriptions tend to be more stable, is often ideal. Most people who qualify for laser vision correction are good candidates for LASIK.
PRK is an excellent choice when your corneas are thinner, since no flap is created and more corneal structure is preserved. We also recommend PRK for people whose occupations or hobbies carry a higher risk of direct eye trauma, including military personnel, law enforcement officers, martial artists, and contact sport athletes. Without a flap, there is no risk of flap displacement from a blow to the eye.
- Thinner corneas or irregular corneal surfaces that may not safely support a flap
- Higher risk of eye trauma due to occupation or athletic activities
- Moderate to severe pre-existing dry eye symptoms
- Previous corneal scarring or surface irregularities that favor surface treatment
- Epithelial basement membrane dystrophy, a condition where the outer layer does not adhere well
Some conditions make laser vision correction unsafe or unlikely to produce stable results. We will not recommend LASIK or PRK in these situations and will discuss appropriate alternatives with you.
- A prescription that has changed in the past year
- Pregnancy or breastfeeding, which can cause temporary vision fluctuations
- Corneal ectatic diseases such as keratoconus or pellucid marginal degeneration
- Severe uncontrolled dry eye or active ocular surface disease
- Insufficient corneal thickness to safely support laser ablation
- Uncontrolled autoimmune conditions that impair healing
- Current or recent use of isotretinoin, which can affect how tissue heals
Before recommending either procedure, we perform a comprehensive pre-operative evaluation using advanced diagnostic technology. We use corneal topography to map the exact shape and thickness of your cornea, wavefront analysis to detect subtle optical imperfections, pupil measurement, and tear film assessment to identify any dry eye that should be treated before surgery.
We also calculate your predicted residual stromal bed thickness, which is the amount of corneal tissue that will remain after laser treatment. This calculation is central to avoiding a rare but serious complication called corneal ectasia, where the cornea becomes too thin and begins to bulge forward. Careful patient selection and conservative treatment planning have made ectasia very uncommon with either procedure, but these measurements are essential for choosing the safest approach.
What to Expect on Surgery Day
Both procedures are performed as outpatient surgeries and take less than 30 minutes total for both eyes. Numbing drops are used throughout so you will not feel pain, and you will be awake and alert during the procedure.
We apply anesthetic drops and gently hold your eyelids open with a small device. A femtosecond laser creates your corneal flap in a matter of seconds. You may feel brief pressure and notice your vision dim slightly during this step. We then lift the flap and ask you to focus on a small target light while the excimer laser reshapes your cornea. The laser typically works for less than one minute per eye, guided by an automated tracking system that follows your eye movements in real time.
After treatment, we reposition the flap and smooth it gently into place. No stitches are needed. The flap bonds through natural healing over the following days.
After applying numbing drops, we remove the epithelial layer using a dilute alcohol solution, a gentle brush, or the EpiLase device, depending on which surface ablation technique is best for your eyes. This step is painless, though it takes slightly longer than creating a LASIK flap. We then apply the excimer laser, using the same technology as in LASIK, while you focus on a fixation light.
After laser treatment, we rinse your eye and place a soft bandage contact lens over the surface to protect it and improve comfort during the epithelial regeneration period. You will wear this lens until your epithelium has fully healed, usually within four to seven days.
Both procedures are well tolerated. You may sense slight pressure during flap creation in LASIK or surface preparation in PRK, and you may notice a faint odor as the laser reshapes corneal tissue, but neither sensation is painful. Most patients describe feeling more aware of the process than uncomfortable.
- Numbing drops prevent pain throughout both procedures
- Brief pressure or dimming of vision during LASIK flap creation is normal
- A mild sedative is available if you feel anxious before surgery
- Total time in the procedure room for both eyes is generally under 30 minutes
- Plan to be at our office approximately two hours on surgery day, including preparation and post-procedure instructions
Recovery: LASIK vs. PRK
Recovery is where LASIK and PRK differ most noticeably. LASIK offers a much faster return to comfortable vision, while PRK requires patience as the corneal surface heals from the outside in.
Most LASIK patients notice significantly improved vision within hours of surgery. You may experience tearing, light sensitivity, and a mild gritty feeling on the day of your procedure, but these symptoms are usually short-lived. We recommend resting with your eyes closed for the first four to six hours after surgery, and many patients nap when they get home, which helps both healing and comfort.
By the next morning, most patients see well enough for many daily activities, though your vision may fluctuate slightly as healing progresses. You will return for a follow-up exam the day after surgery so we can confirm the flap is positioned correctly and healing on schedule. Driving is permitted only after your LASIK Surgeon confirms it is safe at your follow-up visit.
The first three to five days after PRK are considerably more uncomfortable than after LASIK because the entire epithelial layer must regenerate. You will likely experience a burning or gritty sensation, significant light sensitivity, tearing, and blurry vision during this period. The bandage contact lens helps reduce discomfort, but many patients also need prescription pain medication for the first few days.
We use a multimodal comfort plan that often includes cold compresses, oral non-opioid pain relievers, and anti-inflammatory drops. Do not use topical anesthetic drops at home, as these can interfere with healing. Your vision will remain blurry until the epithelium regenerates and the surface smooths out, typically within one to two weeks.
LASIK patients typically return to office work and screen-based tasks within one to three days. Light exercise can resume around day three, most sports after one to two weeks, and swimming or contact sports after at least four weeks to allow the flap to fully heal.
PRK patients generally need four to seven days before returning to work, depending on comfort and job demands. Light exercise may resume after about one week, but we recommend waiting three to four weeks for swimming and at least one month for contact sports. Because PRK creates no flap, long-term activity restrictions are fewer once healing is complete, which is part of why it is preferred for high-impact lifestyles.
Serious complications after laser vision correction are rare, but certain symptoms require immediate attention. Contact us right away if you experience sudden vision loss, severe pain that does not improve with prescribed medication, increasing redness, discharge, or swelling that may suggest infection, or any trauma to your eye after LASIK that raises concern about flap displacement.
After PRK, if the bandage contact lens falls out or shifts, do not reinsert it yourself. Call us for guidance. Flashes of light, new floaters, or a curtain-like shadow across your vision could signal a retinal issue unrelated to the laser treatment and require prompt evaluation. Any symptom that concerns you is worth a call. We would always rather reassure you than have you wait at home.
Vision Results and Long-Term Outcomes
Both LASIK and PRK can produce excellent, lasting vision correction. The main difference between them is not where you end up, but how quickly you get there.
LASIK provides dramatically faster visual recovery. Many patients can perform everyday tasks without glasses the very next day if cleared by their LASIK Surgeon. Vision continues to sharpen over the following weeks, but the initial improvement is immediate.
PRK patients experience a gradual clearing of vision over weeks to months. The surface must fully regenerate and smooth before your best vision emerges. This slower timeline can be frustrating but does not indicate a poorer result. By three to six months, PRK patients typically see just as well as LASIK patients.
Both procedures deliver excellent results for appropriately selected candidates. The majority of patients achieve 20/20 vision or better, and nearly all reach 20/40 or better, which is the standard for driving without glasses. Higher prescriptions may see somewhat more variability, but both procedures still provide meaningful improvement in most cases.
Your individual anatomy, prescription strength, and healing response have more influence on your final outcome than which procedure we choose. We will discuss realistic, personalized expectations during your consultation.
Dry eye is the most common side effect after both procedures. Both LASIK and PRK temporarily disrupt corneal nerves that help signal tear production. LASIK tends to cause more pronounced and longer-lasting dryness because flap creation involves more nerve disruption. Most LASIK patients experience dryness for several months, and some need ongoing artificial tear use.
PRK generally causes less long-term dry eye because fewer corneal nerves are affected by surface treatment. If you already have dry eyes before surgery, PRK may be the better choice to minimize worsening of this symptom.
Temporary glare, halos around lights, and starbursts are common during the healing period after both procedures, especially in low-light conditions. These symptoms usually improve significantly within three to six months as the corneal surface stabilizes. Customized wavefront-guided treatments help reduce the likelihood of significant night vision disturbances.
A concern more specific to PRK is corneal haze, a mild cloudiness that can develop during healing. The routine use of mitomycin-C, an anti-scarring agent applied briefly during PRK surgery, has greatly reduced the risk and severity of haze. Wearing UV-blocking sunglasses outdoors for at least three to six months after PRK and following your prescribed steroid drop taper are important steps in preventing haze from developing.
Once your eyes have fully healed and vision has stabilized, the corneal reshaping from either procedure is permanent. The laser treatment does not wear off over time. However, your eyes can still change due to natural aging, such as presbyopia, the gradual loss of near focusing ability that affects most people after age 40, or cataract formation later in life. Neither LASIK nor PRK prevents these age-related changes.
A small percentage of patients experience slight regression, where a portion of the original prescription returns over time. If regression affects your quality of life, an enhancement procedure may be an option, provided sufficient corneal tissue remains. We will discuss the likelihood of this based on your specific prescription and corneal measurements.
Caring for Your Eyes After Surgery
How well you follow post-operative instructions directly affects how smoothly and completely your eyes heal. We will walk you through everything you need to know before you leave our office on surgery day.
After LASIK, we typically prescribe antibiotic drops to prevent infection and steroid drops to reduce inflammation, used for about one week. Preservative-free artificial tears are essential for comfort and are used frequently for the first several weeks, then as needed for several months.
PRK requires a more intensive drop regimen because of the longer healing process. In addition to antibiotic and steroid drops, you may receive medications specifically aimed at preventing corneal haze. Steroid drops are often continued for several weeks to months on a tapering schedule. We monitor your eye pressure during the steroid taper because some patients develop a temporary pressure response to steroid drops.
- Wash your hands thoroughly before using any eye drops
- Avoid touching the dropper tip to your eye or any surface
- Wait at least five minutes between different types of drops
- Only our eye care team should remove the PRK bandage contact lens
After LASIK, protecting the corneal flap during the first several weeks is essential. We provide protective eye shields to wear while sleeping for at least the first week to prevent accidental rubbing. Rubbing your eyes while awake is also dangerous and must be avoided entirely during this time, as dislodging the flap requires an urgent visit to reposition it.
- Wear provided eye shields while sleeping for the first week after LASIK
- Keep the bandage contact lens in place after PRK until we remove it at your follow-up
- Wear sunglasses outdoors to reduce light sensitivity after either procedure
- After PRK, wear UV-blocking sunglasses outdoors for at least three to six months to lower haze risk
- Avoid eye makeup for at least one week to reduce infection risk
- Keep water, soap, and shampoo away from your eyes during the first week
After LASIK, you may shower the day after surgery but should keep your eyes closed and avoid direct water spray. Avoid swimming pools, hot tubs, and natural bodies of water for at least two weeks. Contact sports or activities with a high risk of eye impact should wait at least four weeks for the flap to fully heal and bond securely.
PRK patients face similar water restrictions, but for different reasons. The healing epithelium is vulnerable to infection and irritation. We recommend avoiding swimming for at least three weeks. Once the surface has fully regenerated, generally around one month, the eye is more resistant to impact than it would be after LASIK because there is no flap to displace. This makes PRK the preferred long-term choice for contact athletes and high-risk occupations.
After LASIK, follow-up visits are typically scheduled the day after surgery, at one week, one month, three months, and one year. These appointments allow us to confirm the flap is healing correctly, monitor dry eye, track your vision progress, and address any concerns as they arise.
PRK patients require more frequent early monitoring because of the longer healing timeline. You will see us within the first few days for bandage contact lens removal, then at one week, two weeks, one month, three months, six months, and one year. We monitor your eye pressure during the steroid taper and watch carefully for any early signs of corneal haze. Consistent follow-up care is one of the most important things you can do to protect your outcome.
Frequently Asked Questions
The questions below address some of the most common decisions and concerns our patients face when weighing LASIK against PRK.
When both procedures are performed on appropriate candidates, final visual outcomes are equivalent. The difference is how quickly you reach those results, not the quality of vision you ultimately achieve. Your choice should be guided by your corneal anatomy, lifestyle, and recovery timeline preferences rather than an expectation that one procedure produces sharper vision than the other. Both use the same laser technology to achieve the correction.
The procedures carry different types of risks rather than one being universally safer. LASIK carries a small but real risk of flap-related complications, while PRK carries a risk of corneal haze and involves a longer, more uncomfortable healing period. For people with thinner corneas, irregular surfaces, or high-trauma lifestyles, PRK is generally the safer choice. For those whose priority is fastest recovery with minimal early discomfort and who have healthy, adequately thick corneas, LASIK often makes more sense. We assess your individual risk profile carefully before making any recommendation.
The longer recovery is a real trade-off, but many patients find it is the right one for their circumstances. PRK is the preferred choice when your corneal thickness does not comfortably support a flap, when your work or sport involves significant eye contact risk, or when certain surface conditions make flap creation less safe. For patients who can plan ahead and take recovery time into account, the absence of a permanent flap means fewer long-term restrictions and greater corneal structural resilience over time. We will help you weigh the timing against the benefits at your consultation.
This is determined through pachymetry, a painless measurement of corneal thickness at multiple points, combined with corneal topography mapping and ablation depth calculations specific to your prescription. If your corneas do not have enough tissue to safely support both the flap creation and the laser removal while leaving adequate residual stromal bed thickness, PRK becomes the preferred option. This is one reason the pre-operative evaluation is so thorough. Borderline cases require especially careful analysis, and we take a conservative approach to protect your long-term corneal health.
If you are over approximately 40 to 45 years old, you likely have or will develop presbyopia, the age-related decline in near focusing ability that affects virtually everyone. Neither LASIK nor PRK treats or prevents presbyopia. We can correct your distance vision beautifully, but reading glasses may still be needed for close tasks. Some patients choose monovision correction, where one eye is set for distance and the other for near, which can reduce reading glass dependence. We recommend trialing monovision with contact lenses before committing to surgical monovision so you can experience how it feels before making a permanent decision.
In the first days to weeks after LASIK, rubbing your eye carries a real risk of displacing the corneal flap. If this happens, your vision may change suddenly and the eye may become uncomfortable. This is an urgent situation that requires you to contact us immediately for evaluation and, if needed, flap repositioning. Avoiding eye rubbing is one of the most important protective behaviors after LASIK. If your eye feels itchy or irritated, blinking several times or using artificial tears is a safe alternative to rubbing.
Schedule Your Laser Vision Correction Consultation
Choosing between LASIK and PRK is a personal decision that deserves thoughtful, expert guidance. At NewView Eye Center, our LASIK Surgeons combine advanced diagnostic technology with personalized care to determine which procedure is safest and most effective for your unique eyes. We proudly serve patients throughout Northern Virginia and look forward to helping you take the next step toward clearer, more confident vision.
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