الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
For over as century, ophthalmologists have searched for a surgical method to permanently correct refractive errors. At least 15 different refractive surgical techniques have been developed, yet none has gained widespread acceptance because of the unsolved problems regarding poor predictability, instability, lack of adjustability, irreversibility and adverse effects on the quality of vision. LASIK demonstrated promising results for myopia and astigmatism, however in high myopia ablation depths, small diameter ablation zones, increased optical aberrations and poor predictability have raised doubts that the cornea is the appropriate site for the correction of high to extreme refractive errors.
Phakic IOL surgery was introduced by Strampelli in 1950’s and was abandoned until renewed interest began with Fechner’s modification of Worst iris claw lens, Baikoffs modification of Kelman multiflex lens and Fyodorov design of a posterior chamber lens. All of which have demonstrated reasonable performance regarding efficacy, predictability, stability and safety for high myopia.
The study aimed at the assessment of the efficacy, predictability, stability and safety of phakic lOLs as compared to LASIK for the surgical correction of high myopia.
The study was carried out on two groups of patients with myopia ranging form -12.00 to -26.00 D. The first group included 30 eyes underwent LASIK using Chiron