Lasik is the most frequently undertaken refractive surgery procedure. Lasik is the abbreviated form of “laser-assisted in situ keratomileusis.” Lasik is immensely popular because of its advantages over other methods. There is little or minimal pain after the surgery is completed coupled with the fact that proper eyesight is normally attained almost straight away or no less than by the very next day.
An instrument called a microkeratome is employed in lasik eye surgery to produce a fine, circular flap in the cornea. Another sophisticated way of creating the flap is with a laser.
In this procedure the flap is folded back out of the way and some corneal tissues are removed underneath employing an excimer laser. The excimer laser makes use of a cool ultraviolet light ray to accurately eliminate (“ablate”) very minuscule bits of tissue from the cornea to restructure it. When the cornea is remodeled in the proper manner, it functions efficiently to focus light into the eye and onto the retina, imparting better vision than before. The flap is then arranged back in position, protecting the portion where the corneal tissue was detached.
Both nearsighted and farsighted people can gain immensely from the lasik technique. With nearsighted individuals, the aim is to flatten the cornea that is extremely steep; and as farsighted individuals are concerned, a steeper cornea is preferred. Also, excimer lasers can rectify astigmatism, by flattening an uneven cornea into a more regular shape.
Checks undertaken before the procedure
- Individuals contemplating of undergoing lasik eye surgery should first select a reliable surgeon.
- In order to determine if an individual is a suitable candidate for lasik, the eye doctor will evaluate the eyes to ascertain their health, what sort of vision rectification is required, and the extent of laser ablation that is necessary.
- Similar to a standard eye check, the physician employs instruments like a refractor (to find out your prescription); a slit lamp (to examine the rear of the eye for retinal difficulties); and a tonometer (to ascertain intraocular pressure – if it’s excessive, this may be an initial indication of glaucoma).
The doctor will also search for indications of dry eye ailment, which must be taken care of and cured before lasik can be carried out.
In addition, a corneal topographer is normally employed. This equipment photographs the eye and produces a sort of “map” of the cornea. A completely rounded cornea is not very common, and the topographer will exhibit the corneal abnormalities and the steepness or flatness that the surgeon requires to rectify. Certain doctors are also utilizing latest “wavefront” gadgets, which transmits waves through the eye to supply an even more accurate map of the irregularities that are disturbing the vision. Ultimately, the doctor will make queries regarding any health troubles one may have or medicine one takes. Some health difficulties will debar an individual completely for lasik, but others may just put off the procedure until conditions are favorable.