Lasik Surgery - 3D Medical Animation Video

What is LASIK?

The eye and eyes errorsThe genitalia of the eye. Indicated are the conjunctiva, sclera, choroid, optic nerve, retina, alcove angle, lens, cilary body, brittle humor, aqueous humor, iris, pupil, cornea. 

The cornea is a allotment of the eye that helps focus ablaze to actualize an angel on the retina. It works in abundant the aforementioned way that the lens of a camera focuses ablaze to actualize an angel on film. The angle and absorption of ablaze is additionally accepted as refraction. Usually the appearance of the cornea and the eye are not absolute and the angel on the retina is out-of-focus (blurred) or distorted. These imperfections in the absorption ability of the eye are alleged refractive errors. There are three primary types of refractive errors: myopia, hyperopia and astigmatism. Persons with myopia, or nearsightedness, accept added adversity seeing abroad altar as acutely as abreast objects. Persons with hyperopia, or farsightedness, accept added adversity seeing abreast altar as acutely as abroad objects. Amaurosis is a baloney of the angel on the retina acquired by irregularities in the cornea or lens of the eye. Combinations of amaurosis and amaurosis or hyperopia and amaurosis are common. Glasses or acquaintance lenses are advised to atone for the eye's imperfections. Surgical procedures aimed at convalescent the absorption ability of the eye are alleged refractive surgery. In LASIK surgery, absolute and controlled abatement of corneal tissue by a appropriate laser reshapes the cornea alteration its absorption power.

Other types of refractive surgery

Radial Keratotomy or RK and Photorefractive Keratectomy or PRK are added refractive surgeries acclimated to adapt the cornea. In RK, a actual aciculate knife is acclimated to cut slits in the cornea alteration its shape. PRK was the aboriginal surgical action developed to adapt the cornea, by sculpting, application a laser. Later, LASIK was developed. The aforementioned blazon of laser is acclimated for LASIK and PRK. Often the exact aforementioned laser is acclimated for the two types of surgery. The above aberration amid the two surgeries is the way that the stroma, the average band of the cornea, is apparent afore it is vaporized with the laser. In PRK, the top band of the cornea, alleged the epithelium, is aching abroad to betrayal the stromal band underneath. In LASIK, a accessory is cut in the stromal band and the accessory is bankrupt back. 

Another blazon of refractive anaplasty is thermokeratoplasty in which calefaction is acclimated to adapt the cornea. The antecedent of the calefaction can be a laser, but it is a altered affectionate of laser than is acclimated for LASIK and PRK. Added refractive accessories accommodate corneal arena segments that are amid into the stroma and appropriate acquaintance lenses that briefly adapt the cornea (orthokeratology).
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Posted in: Ophthalmology,Others