<p>Vector Analysis of Astigmatism in Keratoconic Eyes After Combined Intrastromal Corneal Ring Segments Implantation and Collagen Cross-Linking</p>
نویسندگان
چکیده
منابع مشابه
Polar Value Analysis of Corneal Astigmatism in Intrastromal Corneal Ring Segment Implantation
Purpose. To evaluate surgically induced astigmatism (SIA) and the average corneal power change in symmetric intrastromal corneal ring segment (ICRS) implantation. Methods. The study included 34 eyes of 34 keratoconus patients who underwent symmetric Intacs SK ICRS implantation. The corneal pocket incision meridian was the preoperative steep meridian. Corneal power data were obtained before and ...
متن کاملCorneal Asphericity Changes after Implantation of Intrastromal Corneal Ring Segments in Keratoconus
Keratoconus is a progressive corneal thinning of unknown cause in which the cornea assumes a conical shape, with progressive irregular astigmatism and deterioration of visual acuity. The normal anterior corneal surface is prolate, and it could be described as conic (flattening of the radius of curvature from the apex toward the periphery)1. In keratoconus corneas, the steepening of the central ...
متن کاملIntrastromal Corneal Ring Segments for Astigmatism Correction after Deep Anterior Lamellar Keratoplasty
Background. To evaluate the change in corneal astigmatism after intrastromal corneal ring segment (ICRS) implantation in keratoconus patients with previous deep anterior lamellar keratoplasty (DALK). Design was a longitudinal, retrospective, interventional study. The study included 25 eyes of 24 patients with keratoconus who had DALK performed at least two years prior to ICRS implantation. All ...
متن کاملferrara intrastromal corneal ring segments in keratoconus
purpose: to evaluate the efficacy and safety of ferrara intra-stromal corneal ring (fiscr) segments for keratoconus. methods: the study was performed on 57 eyes of 44 patients with keratoconus and clear cornea who were contact lens intolerant. subjects underwent complete ophthalmic examination before surgery. objective and subjective refraction achieving the best visual acuity was used to deter...
متن کاملIntrastromal corneal ring segment implantation to correct astigmatism after penetrating keratoplasty.
PURPOSE To evaluate the clinical outcomes of implantation of Ferrara intrastromal corneal ring segments (ICRS) in patients with astigmatism after penetrating keratoplasty (PKP). SETTING Private clinic, Belo Horizonte, Brazil. DESIGN Retrospective consecutive case series. METHODS Chart records of post-PKP patients who had ICRS implantation from May 2005 to September 2009 were retrospective...
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ژورنال
عنوان ژورنال: Clinical Ophthalmology
سال: 2020
ISSN: 1177-5483
DOI: 10.2147/opth.s241755