Why Corrective Eye Surgery?
Wearing contact lenses and glasses can be hurdles for some of the people; they feel problems and negative effect on their active lifestyle especially when they engage in physical activities. Most of the people are solving their vision issue in a permanent way.
Eye surgeries have crossed a long way in advancements. These surgeries are known as refractive and laser eye surgery. Most of the procedures work to reshape the cornea, so light could pass and can focus on the retina; some other surgeries replace the eye lens.
Here are some different types of corrective surgeries and how they work:-
Lasik (laser in-situ keratomileusis):-
Lasik surgery reshapes the corneal tissue and focuses light into the eye and reaches the retina. This process generally takes place for the patients who are nearsighted, farsighted and has astigmatism. Lasik has a quite unique methodology. Eye surgeon makes a flap on the outside layer of the cornea so that the underlying issue could be accessed. Lasik procedure requires precision and advanced computer imaging technology, which allows Lasik specialists to create detailed corneal images and planning about the treatment.
PRK (photorefractive keratectomy)
In PRK procedure eye specialist uses a laser to reshape the cornea. Same as LASIK, PRK only reshapes the surface of the cornea. For mild to moderate nearsightedness, farsightedness or astigmatism PRK remains in demand. This procedure also works with computer imaging technology.
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LASEK (laser epithelial keratomileusis)
LASEK Procedure is different from PRK; an alcohol solution loses epithelial cells are in this procedure. Then a Laser reshapes the Cornea; a flap is set and secured with the soft contact lens, so the healing of eye could take place. LASEK can treat nearsightedness, farsightedness and astigmatism.
ALK (automated lamellar keratoplasty)
ALK helps to those who have severe nearsightedness and a few levels of farsightedness. For this procedure, creates a flap in the cornea to access the eye issue. The doctor makes an incision in the sub layer of the cornea, reshapes it and corrects vision.
RLE (refractive lens exchange).
RLE takes place for correcting cataracts. The doctor gives small incision and removes the natural lens of an eye on the edge of Cornea and put silicone or plastic lens. This procedure is also called as CLE (CLEAR LENS EXTRACTION ) or RLR( refractive lens replacement) and corrects severe farsightedness or nearsightedness. RLE helps to treat thin corneas, dry eyes and other minor eye problems
EPI LASIK and PRK procedure have some similarity. The surgeon separates a thin layer of Cornea and reshapes it; this layer either be removed or replaced. The doctor leaves a soft contact lens so that the area could complete its healing.
PRELEX (Presbyopic lens exchange)
In Presbyopia, the eye loses its flexibility; those patients have difficulty to focus on close objects. In PRELEX doctor implants multifocal lens which improves flexibility and restores focus.
It is also is known as intracorneal ring segments (ICR); in this procedure, the doctor makes a small incision in the cornea. Two crescent-shaped rings are placed at the outer edge of the cornea to flatten it. This flattened cornea allows for light rays to be altered and focus on the retina. ICR has replaced by laser-based procedures.
PHAKIC INTRAOCLAR LEAS IMPLANTS
When PRK and LASIK, is not possible because of higher nearsightedness, then Phakic Intraocular Leas implants became a good option. The doctor inserts an implant through a very small incision at the edge of the cornea and attaches to iris behind the pupil.
AK (astigmatic keratonomy)
AK is a surgical procedure which corrects astigmatism without the laser. In astigmatism, corneas become like a football and this surgery corrects this by giving one or two incisions at the steepest part of the cornea. Through incisions, cornea relaxes and takes a more rounded shape.