Dr. Emil Chynn’s innovative, non-cutting, LASEK Surgery corrects vision impairments too difficult to be corrected by other forms of laser eye surgery and without complications.
NEW YORK, March 4, 2011: There is now hope for those who were once told their vision was too poor to be corrected even by laser surgery. Dr. Chynn’s non-cutting LASEK surgery has corrected a previously unthinkable prescription of -22, the highest prescription ever corrected by any type of laser eye surgery in New York City! For comparison, a prescription of -3 is considered legally blind, and the highest prescription contacts are manufactured to correct is -16. LASIK or IntraLase surgery can commonly only correct a prescription as high as -9, and on average -5; LASEK’s average is at least -7. What makes LASEK surgery so different?
Other forms of laser eye surgery, such as LASIK and IntraLase, require a flap to be cut in the cornea, which limits their ability to correct severe impairments and significantly increases the chance for complications. In order to correct the vision impairment, further tissue must be removed from the cornea depending on the severity of the impairment; the higher the prescription, the more tissue must be removed. For example, to correct a prescription of -7, the amount of tissue required for removal is about 100microns. In order to compensate for the eye’s natural changes in the future, another 50microns must be removed. Because cutting types of laser eye surgery (LASIK and IntraLase) already remove 100-150microns for the flap, a total of 250-300microns of tissue is removed from the only 500-550micron thick cornea, leaving the patient with only 200-300microns. The necessary thickness to prevent the cornea from possibly bursting post-operatively is 250microns. LASIK cannot even correct a prescription of only -7 safely, while LASEK can safely, and easily, correct a prescription of -22.
LASEK surgery, only offered in NYC by Dr. Emil Chynn, requires no flap cutting, and therefore leaves the patient with a much thicker and safer cornea; in this example, 350-400microns, as opposed to the mere 200microns left by LASIK surgery. By eliminating the need for the flap, much less tissue is removed from the cornea, allowing for correction of even the worst prescriptions and without the risk of complications. LASEK is the safest laser eye surgery procedure, and as the -22 patient can attest, it is the only one that can correct vision in patients with high prescriptions.