The Only Safe & Proven Solution for Extreme Myopia: LASEK

If you have a high or extreme prescription and have been told you aren’t a candidate for LASIK, you might feel like you’re out of options. But that’s not true. The key is choosing a procedure that is safe for high prescriptions and doesn’t weaken the cornea.
At Park Avenue LASEK, we specialize in treating high myopia with a non-cutting, non-invasive approach that is both safer and more effective than LASIK for extreme prescriptions.
Why LASIK Isn’t Safe for High Myopia
LASIK works by cutting a flap in the cornea and reshaping the underlying tissue. While this works well for lower prescriptions, it becomes dangerous for higher ones. Here’s why:
- Corneal Thickness Matters – LASIK removes a significant portion of corneal tissue. If your prescription is high, too much tissue would need to be removed, putting your eye at risk for structural weakness.
- Increased Risk of Ectasia – LASIK can cause corneal ectasia, a serious condition where the cornea becomes unstable, leading to worsening vision and, in extreme cases, requiring a corneal transplant.
- Dry Eye & Flap Complications – High myopia patients are more prone to severe dry eye after LASIK and have an increased risk of flap-related issues, including dislocation or irregular healing.
Because of these risks, most LASIK surgeons turn away patients with prescriptions beyond -6. But that doesn’t mean you’re out of options. That procedure is LASEK.
LASEK: The Safer Alternative for High Myopia
LASEK (Laser-Assisted Subepithelial Keratectomy) is the only proven alternative for extreme prescriptions. Unlike LASIK, LASEK doesn’t require cutting a corneal flap, making it significantly safer for patients with high myopia.
Here’s what makes LASEK different:
- No Flap – Instead of cutting a flap, LASEK gently moves aside the top layer of the cornea, treating the surface without weakening the structure.
- Safer for High Prescriptions – Because LASEK works on the surface rather than deep inside the cornea, it’s far safer for extreme myopia, even at prescriptions of -10, -12, or more.
- Ideal for Patients with Thin Corneas – Many high-myopia patients have thinner-than-average corneas, making them poor candidates for LASIK. LASEK is designed specifically for these cases.
- Less Risk of Long-Term Complications – Since no flap is created, there’s zero risk of flap dislocation, and less chance of post-surgical dry eye.
- Stronger, More Stable Cornea – Because the corneal structure is left intact, the risk of ectasia is significantly reduced, ensuring long-term vision stability.
Watch Tokyo’s Story: From -9 Prescription to Perfect Vision

Like many of our patients, Tokyo was initially told she wasn’t a LASIK candidate because her prescription was too high. At -9, most LASIK surgeons would have considered her outside of safe limits. But she didn’t give up. She found Park Avenue LASEK and Dr. Chynn, a true pioneer in LASEK surgery with over 30,000 successful procedures.
Now, Tokyo enjoys crystal-clear vision without glasses or contacts—for the first time since childhood.
Her story isn’t unique. Thousands of patients with extreme prescriptions have had their vision corrected with LASEK, safely and permanently.
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Why Choose Dr. Chynn at Park Avenue LASEK?
When it comes to vision correction, experience matters. At Park Avenue LASEK, Dr. Chynn has been perfecting no-cut, no-flap laser eye surgery for decades. Here’s what sets us apart:
- World-Renowned Expert – Dr. Chynn is one of the leading pioneers of LASEK in the U.S., with more experience in high-prescription cases than almost anyone else.
- The Most Experienced LASEK Practice – Our practice ONLY performs LASEK, ensuring that you get a specialist who is 100% focused on this advanced, non-cutting technique.
- Advanced Technology – We use the advanced laser system to safely treat even the highest prescriptions, with customized treatment plans for each patient.
- Proven Success with Extreme Prescriptions – We have treated patients with prescriptions of -10, -12, and even higher, helping them achieve clear, lasting vision.
Is LASEK Right for You?
If you have a high prescription and have been told LASIK isn’t an option, LASEK could be your best and safest solution.
📞 Call us today at (212) 741-8628 or schedule a LASEK consultation at Park Avenue LASEK. Our expert team is ready to help you take the first step toward a life without glasses or contacts.
Don’t let your prescription hold you back—discover what’s possible with LASEK!


#1 Rated
LASEK, LASIK, PRK, SMILE Eye
Surgery Center in NYC
#1 Rated LASEK, LASIK, PRK, SMILE Eye Surgery Center in NYC
(212) 741-8628

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102 E 25th St, New York, NY 10010