Manual Correction of Myopia, Hypermetropia, Astigmatism, Presbyopia & Keratoconus
Abstract
A new method has been designed to correct myopia, hypermetropia, astigmatism and presbyopia of very high power. If 1mm of cornea is tucked, then it corrects 3.174 D & If 1mm of horizontal diameter of cornea is reduced, then it corrects +4.1D. This procedure is reliable, safe, cheapest and simplest. Because of the use of simple procedure to split the cornea, adjustable nonabsorbable sutures, correction of very high myopia and hypermetropia along with astigmatism and presbyopia, the procedure is expected to be accepted.
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Introduction
LASIK (laser-assisted in situ keratomileusis) is a type of refractive surgery for the correction of myopia, hypermetropia and astigmatism. LASIK is most similar to another surgical corrective procedure, photorefractive keratectomy (PRK), and LASEK. All represent advances over radial keratectomy in the surgical treatment of refractive errors of vision. For patients with moderate to high myopia or thin corneas which cannot be treated with LASIK and PRK, the phakic intraocular lens is an alternative.1,2
Some people with poor outcomes from LASIK surgical procedures report a significantly reduced quality of life because of vision problems or physical pain associated with surgery. However, 30% of post-LASIK referrals to tertiary ophthalmology care centers have been shown to be due to chronic dry eye.3,4 .
A type of LASIK, known as presbyLASIK, may be used in presbyopia.5
Flap complications,6,7,8,9 slipped flap and flap interface particles are other complications.
Together with his colleagues, Charles Munnerlyn founded VISX USA inc.
SMILE is an acronym that stands for “Small Incision Lenticule Extraction” and is the latest advancement in laser vision correction. During a SMILE procedure, the femtosecond laser is used to cut a small corneal lenticule (precise lens shaped disc within cornea) and then it is removed via a small keyhole incision. The biggest difference and advancement between the two is the fact that SMILE laser eye surgery is a flapless procedure.
Conclusion
Manual correction of myopia, hypermetropia, astigmatism and presbyopia is simplest, cheapest and reliable. If 1 mm of cornea is tucked, then it corrects 3.174 D & If 1 mm of horizontal diameter of cornea is reduced, then it corrects +4.1D. Because of use of simple procedure to split the cornea, tie the sutures either to tuck it or use of purse string suture to squeeze the horizontal length of cornea, correction of very high myopia, hyprmetropia, astigmatism and presbyopia, this procedure has lots of promises in future.