Polar Value Analysis of Corneal Astigmatism in Intrastromal Corneal Ring Segment Implantation
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 ...
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PURPOSE To evaluate the safety and efficacy of intrastromal corneal ring segment implantation using both mechanical and femtosecond-assisted tunnel creation for the treatment of patients with keratoconus. METHODS A retrospective noncomparative interventional study including 96 eyes of 75 patients with keratoconus. All patients had contact lens intolerance and clear central corneas. Corneal tu...
متن کاملIntrastromal corneal ring segment implantation for ectasia after refractive surgery.
PURPOSE To evaluate the clinical outcomes of intrastromal corneal ring segment (ICRS) implantation to correct ectasia in eyes with prior refractive surgery. METHODS Forty-one eyes of 25 patients (13 men, 12 women; mean age, 28.66 years) with ectasia after refractive surgery [photorefractive keratectomy (PRK) or laser in situ keratomileusis (LASIK)] were included in a nonrandomized, retrospect...
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...
متن کاملReasons for intrastromal corneal ring segment explantation.
Reasons for intrastromal corneal ring segment explantation In their recent article, Ferrer et al. report that 57 of 250 implanted intrastromal corneal ring segments (ICRS) had to be explantedda rate of 22.8%. The main cause of this very high explantation rate was extrusion (48.3%). There are 2 major causes of ICRS extrusion: (1) superficial implantation of a segment and (2) a segment that is pl...
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ژورنال
عنوان ژورنال: Journal of Ophthalmology
سال: 2016
ISSN: 2090-004X,2090-0058
DOI: 10.1155/2016/7127534