Basic Knowledge About Lasik

Based from wikipedia, lasik (laser-assisted in situ keratomileusis) is a type of refractive laser eye surgery performed by ophthalmologists for correcting myopia, hyperopia, and astigmatism. The procedure is generally preferred to photorefractive keratectomy, PRK, (also called ASA, Advanced Surface Ablation) because it requires less time for the patient's recovery, and the patient feels less pain overall. However, there are instances where a PRK/ASA procedure is medically justified as being a better alternative to LASIK

Many people choose LASIK as an alternative to wearing corrective eyeglasses or contact lenses.

Lasik Technology

In 1950's, the Colombia-based Spanish ophthalmologist Jose Barraquer was developed the first microkeratome, used to cut thin flaps in the cornea and alter its shape, in a procedure called keratomileusis. Those technique made Lasik Technology become possible to do. Stephan Schaller assisted landmark in this process. Barraquer also investigated the question of what part of the cornea that has been left unaltered to provide stable long-term results.

The general term for a change of optical measurements of the patient through an operation of Refractive Surgery. Later developments in techniques and procedures including RK (radial keratotomy), developed in Russia in the 1970s by Svyatoslav Fyodorov and PRK (photorefractive keratectomy), developed in 1983 at Columbia University by Dr. Steven Trokel " The father of vision correction laser, "who not only published the first article on laser correction, but also granted patents in the laser surgery in the U.S. Patent Office. (RK is a procedure where radial corneal cuts are made, typically using a micrometer diamond knife, and is completely different from LASIK).

In 1968 at the Northrup Corporation Research and Technology, University of California, Mani Lal Bhaumik and a group of scientists are working on developing a carbon dioxide laser. His work became what was to become the excimer laser. This type of laser will become the cornerstone of refractive eye surgery. Dr. Bhaumik announced his advance team in May 1973 at a reunion in Denver Optical Society of America in Denver, Colorado. Later the patent of its discovery.

The introduction of laser refractive surgery is derived from the work of Rangaswamy Srinivasan. In 1980, Srinivasan, working at IBM Research Lab, discovered that an ultraviolet excimer laser could etch a living tissue precisely without thermal damage in the surrounding area. He named the phenomenon Ablative Photodecomposition (APD). Stephen Trokel a paper published in the American Journal of Ophthalmology in 1983, outlines the potential benefits of using the excimer laser refractive surgery. The first patent for the laser correction of the cornea using an excimer laser was awarded to Dr. Steven Trokel.

The first patent for LASIK was granted by the U.S. Patent Office to Dr. A. Gholam Peyman on June 20, 1989, U.S. Patent # 4,840,175, "Method for modifying corneal curvature, covering the surgical procedure in which a flap is cut in the cornea and pulled back to expose the corneal bed. Ablative surface is exposed to the desired shape with an excimer laser, following which the flap is replaced.

The first trial of excimer laser on the FDA began in 1989. The laser was not available to any doctor other than the ten selected by the FDA for testing Visx. The first use of the laser was to change the shape of the surface of the cornea, known as PRK. Dr. Joseph Dello Russo was one of ten investigators that the original trial and obtained FDA approval of the Visx laser. LASIK concept was first introduced by Dr. Palliakaris in 1992 the group of ten surgeons who were selected by the FDA to prove the Visx laser in 10 centers in the U.S.

Dr. Palliakaris theorized the benefits of carrying out post-PRK was raised in the surface layer is known as a flap made by the Mikrokeratome developed by Barraquer in 1950. The combination of a flap and PRK became known as LASIK, an acronym. It soon became very popular, as an immediate improvement in vision and involved much less pain and discomfort that PRK.

Today, faster lasers, larger spot areas, bladeless flap incision, intraoperative pachymetry, and wavefront-optimized and-guided techniques have significantly improved the reliability of the procedure compared with 1991. However, the fundamental limitations of excimer lasers and undesirable destruction of the nerves of the eye have led to investigation of many alternatives to "plain" LASIK, including LASEK, Epi-LASIK, sub-Bowman Keratomileusis aka thin-flap LASIK, wavefront-guided PRK, and modern intraocular lenses.

LASIK may one day be replaced by intrastromal ablation through all-femtosecond correction (as Lenticular Extraction femtosecond, FLIVC or IntraCOR), or other techniques to prevent the weakening of the cornea with large incisions and deliver less energy to surrounding tissues. The 20/10 (now Technol) FEMTEC laser has been used recently for the incision least several hundreds of ablation in human eyes and has achieved very good results for presbyopia, with the ongoing trials for myopia and other disorders .

Eye Lasik Info Blog Welcome

Hello All, this is blog about Eye Lasik Surgery. We will post article everything about lasik, like lasik procedure, lasik review, lasik eye surgery, lasik cost, etc.

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