نتایج جستجو برای: intacs ring
تعداد نتایج: 123033 فیلتر نتایج به سال:
PURPOSE To evaluate the efficacy of single-segment Intacs and compare with double-segment Intacs in subjects with post-LASIK ectasia and keratoconus. DESIGN Retrospective comparative analysis. METHODS setting: Boxer Wachler Vision Institute, Beverly Hills, California, USA. study population: Thirty-seven eyes of 28 patients with keratoconus and post-LASIK ectasia classified into two groups: ...
PURPOSE To determine the efficacy of INTACS insertion using a femtosecond laser in the treatment of keratoconus and to compare it to the technique using a mechanical spreader. METHODS INTACS were inserted in 10 eyes using the mechanical spreader to create the channels and subsequently on another 20 eyes using the femtosecond laser. Uncorrected (UCVA) and best spectacle-corrected visual acuity...
PURPOSE To assess the changes in visual acuity and topographic indices after implantation of single-segment Intacs. METHODS Forty-two keratoconic eyes received Femtosecond-assisted single-segment Intacs. Uncorrected distance visual acuity (UDVA) and best spectacle corrected visual acuity (BSCVA), refractive error, keratometry (K1, K2, Km, and KMax.), and seven Pentacam measured topographical ...
purpose: to assess the efficacy of intrastromal rings for management of keratoconus (kcn). methods: this prospective non comparative case series includes 14 eyes of 11 contact lens intolerant patients with kcn. corneal thickness of at least 450 m at the site of segment insertion was required for enrollment. uncorrected visual acuity (ucva), best corrected visual acuity (bcva), refraction, pachy...
Purpose: To evaluate the efficacy of the combined treatment of Intacs SK (Severe keratoconus) and corneal collagen crosslinking in the management of advanced keratoconus (KC). Setting: Private laser center, Haifa, Israel. Affiliated to Hadassah Hospital, Jerusalem. Methods: This is a retrospective study. Intacs SK were implanted using manual technique in eyes with moderate-tosevere keratoconus ...
this thesis is presented 10 ghz voltage controlled ring oscillator for high speed application. the voltage controlled ring oscillator was designed and fabricated in 0.13یm cmos technology. the oscillator is 7-stages ring oscillator with one inverter replaced by nand-gate for shutting down in the ring oscillator during idle mode. tri-state inverter was used to control of 126 bit vector in ri...
PURPOSE To evaluate and compare visual, refractive, and corneal aberrometric outcomes after implantation of 2 types of intrastromal corneal ring segments (ICRS) in eyes with early to moderate ectatic disease. SETTINGS Vissum Corporation-Instituto Oftalmológico de Alicante, Alicante, Spain. METHODS This retrospective analysis comprised consecutive eyes with grade I or grade II corneal ectasi...
In the past, the main goal of intrastromal corneal ring segment (ICRS) implantation was to reduce keratometry. Current treatment nomograms based on classifi cation of the ectasia phenotype aim to provide both therapeutic and refractive correction. We present the case of a 39-year-old woman diagnosed in 2011 with keratoconus in both eyes, with low best spectacle-corrected distance visual acuity ...
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