The Operation - Eye Witness Laser Eye Surgery Day 1a





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Published on May 18, 2012

Filmed Tuesday May 15th, this video shows the actual PRK (Photorefractive keratectomy) procedure. In it you'll see my eyes opened up, drops put in, clamps put in place to keep them open, and then the actual lasers firing. If this is not something you want to see I recommend either just skipping through or skipping the entire video and watching my recovery.

During this process you'll see they first operated on my right eye and then my left. The right eye went really smoothly but I guess its quite normal for the second one to give more problems and that was what happened here too. I was a little more jumpy during the left aye and while the surgery itself went fine the before sequence took a little longer.

Big Thanks to Dr Isaac W. Porter of Lowry Porter Ophthalmology for letting me film this operation

For those who are unfamiliar with PRK here is some info from wikipedia :)
Photorefractive keratectomy (PRK) and Laser-Assisted Sub-Epithelial Keratectomy (or Laser Epithelial Keratomileusis[1]) (LASEK) are laser eye surgery procedures intended to correct a person's vision, reducing dependency on glasses or contact lenses. The first PRK procedure was performed in 1987 by Dr. Theo Seiler, then at the Free University Medical Center in Berlin, Germany.[2] The first LASEK procedure was performed at Massachusetts Eye and Ear Infirmary in 1996 by ophthalmologist, refractive surgeon, Dimitri Azar.[3] The procedure was later popularized by Camellin, who coined the term LASEK for laser epithelial keratomileusis. LASEK and PRK permanently change the shape of the anterior central cornea using an excimer laser to ablate (remove by vaporization) a small amount of tissue from the corneal stroma at the front of the eye, just under the corneal epithelium. The outer layer of the cornea is removed prior to the ablation. A computer system tracks the patient's eye position 60 to 4,000 times per second, depending on the brand of laser used, redirecting laser pulses for precise 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 ablating at that point after the patient's eye is re-centered.

The outer layer of the cornea, or epithelium, 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 or remodelling. With PRK, the corneal epithelium is removed and discarded, allowing the cells to regenerate after the surgery. The procedure is distinct from LASIK (Laser-Assisted in-Situ Keratomileusis), a form of laser eye surgery where a permanent flap is created in the deeper layers of the cornea.

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