LASEK vs. LASIK

Why would you want LASEK over LASIK?

Most other centers in Manhattan specialize in LASIK, or another version of LASIK called IntraLase or i-LASIK, in which the flap is cut with a laser.  IntraLase was developed to decrease the chance of complication while cutting the corneal flap.  And it works–the risk in IntraLase is less than the risk in LASIK.  However, you can never eliminate the risk of cutting a flap unless you actually stop cutting flaps–which Dr. Chynn stopped doing in 2005, when he introduced LASEK to NYC!

In LASEK, instead of cutting your cornea in half to gain access, and lasering the back of your cornea, Dr. Chynn merely treats the front surface of your cornea–eliminating the need for the risky cutting step.  Fully 90% of all LASIK complications involve the flap, so by not making a flap, we’re eliminating 90% of all possible complications (including the most serious ones). So again, we can treat higher Rx, we can treat it safer and you will never have a flap complication.

LASEK avoids the night glare and dry eyes that are sometimes associated with LASIK.  In fact, the primary reason that Dr. Chynn switched from performing (thousands) of LASIKs to LASEK is that he himself has some minor (but bothersome) dry eyes and night glare after his own LASIK.

Night glare after LASIK is caused by your cornea being in 2 pieces forever, since the LASIK flap is cut, lifted up, put back down–and never fully heals.  This is why you can enhance a LASIK years later by digging the flap back up–because it never heals.  Because of this, after LASIK, light is invariably scattered and refracted by the flap interface.  Put another way, the “sandwich” configuration of your cornea is what causes backscatter of light.  This is most noticeable at night–and causes night glare.

Because your cornea is never cut and no flap is made in LASEK, night glare is avoided.  In fact, after LASEK, many of our patients say that their night vision is actually better than it was before in glasses or contacts!

Dry eyes after LASIK is also caused by cutting the flap. When this cut is made, most of the corneal nerves are cut–and never grow back. Your eyes are lubricated by the tear film, which is distributed when you blink. You blink when you (subconsciously) sense your eye drying out. This is why you cannot keep your eyes open forever–eventually, this sensation of dryness is so powerful, you cannot avoid blinking.

But what happens when you cut most of your corneal nerves? Published studies have shown that normal people blink every 5-10 seconds–but after LASIK, they blink only every 10-15 seconds.  In fact, they’re staring themselves dry without even knowing it!

Because LASEK doesn’t cut your cornea and its nerves, your blink rate afterwards is the same as a normal, unoperated eye–hence, no dry eyes!

Dr. Chynn has also eliminated all complications in the operating room by no longer cutting flaps.  That’s why we can have the only glass “open OR” in NYC! Do you think we could have people watching on the sidewalk during their lunch, invite companions into the OR, and stream our live LASEK seminars live if there was even a small chance of a major complication?  Of course not!

LASEK for fixing LASIK complications

So you had LASIK surgery and are still not happy about your vision?

But your surgeon says you cant have an enhancement because now your cornea is to thin… Well we helped many people in that situation. After your initial consutlation we can create a PreVUE lens on our laser with the prescription we can laser into your corena and you will be able to expirence how your new vision will be. We had great success fixing LASIK sub-optimal outcomes with LASEK on top of the old LASIK flap, which almost always improve the vision, about 99% back to 20/20, 1% to only 20/25, and 40% to actually BETTER than 20/20″

standard vs hd

 

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