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Both surgeries represent advances over radial keratotomy in the surgical treatment of refractive errors of vision.
LASIK or “Laser-Assisted in Situ Keratomileusis” is a type of cutting-edge refractive surgery for the correction of myopia, hyperopia, and astigmatism. The LASIK surgery is performed by an experienced ophthalmologist who uses a FDA-approved laser or microkeratome to reshape the eye’s cornea in order to improve visual acuity. LASIK helps reduce or eliminate both lower order and higher order aberrations. Innovative laser technology is used to capture information and create a custom map of your eye’s unique imperfections. This map is then used to calibrate the laser for the procedure. A permanent flap is created in the deeper layers of the cornea with LASIK. The LASIK surgeon moves this flap away for the procedure, before being placed back for healing after surgery.
For most people, LASIK provides a long-lasting alternative to eyeglasses or contact lenses.
Laser LASIK surgery is often a painless experience that leads to working vision without glasses.
PRK or photorefractive karatectomy is another corrective surgical procedure similar to LASIK.
PRK changes the shape of the anterior central cornea using an excimer laser to remove, by vaporization, a small amount of tissue from the corneal stroma at the front of the eye. The outer layer of the cornea, or epithelium, is removed prior to the vaporization with PRK allowing the cells to regenerate after the surgery. A computer system tracks the patient’s eye position 60 to 4,000 times per second, depending on the specifications of the laser that is used. The system redirects laser pulses for precise laser placement. Most modern lasers will automatically center on the patient’s visual axis and will pause if the eye moves out of range and then resume vaporizing at that point after the patient’s eye is re-centered.
The outer layer of the cornea is a soft, rapidly regrowing layer in contact with the tear film that can completely replace itself from limbal stem cells within a few days with no loss of clarity. The deeper layers of the cornea, as opposed to the outer epithelium, are laid down early in life and have very limited regenerative capacity. The deeper layers, if reshaped by a laser or cut by a microtome, will remain that way permanently with only limited healing.
Traverse City Eye embodies expertise, affordability, and convenience. Only the best will do when it comes to caring for your eyes. Trust our board-certified ophthalmologists for your LASIK or PRK surgical needs. Let us help you perfect your sight for the better life that you’ve imagined!