نتایج جستجو برای: corneal resistance factor
تعداد نتایج: 1212535 فیلتر نتایج به سال:
Purpose: To evaluate the efficacy of corneal cross-linking on keratoconic eyes in the pediatric age group. Setting: Private laser center, Haifa, Israel, affiliated to Hadassah Hospital, Jerusalem. Methods: This is a retrospective study of 29 eyes of 20 children treated with corneal cross-linking with aim to arrest the progression of keratoconus. We preformed collagen corneal cross-linking using...
PURPOSE To determine whether corneal biomechanical properties and intraocular pressure (IOP) are affected by eye rubbing and breath holding. METHODS Corneal hysteresis, corneal resistance factor, corneal compensated IOP (IOPcc), and Goldmann equivalent IOP (IOPg) were measured on both eyes of 40 subjects. Measurements were taken at baseline before eye rubbing (ER(0)) and before breath holding...
purpose: to evaluate corneal hysteresis and corneal resistance factor in penetrating keratoplasty grafts in a group of keratoconic eyes using the ocular response analyzer (ora) and to evaluate the relationship between donor size, donor-recipient disparity and central graft thickness (cgt), and ora parameters. methods: this cross-sectional study was conducted on 34 eyes of 34 keratoconus patient...
Until recently, corneal biomechanical properties could not be measured in vivo. The ocular response analyzer is a new, noninvasive device that analyses corneal biomechanical properties simply and rapidly. The ORA allows cornea compensated IOP measurements and can estimate corneal hysteresis (CH) and corneal resistance factor (CRF). It is designed to improve the accuracy of IOP measurement by us...
The aim of this study is to investigate the effect two antiglaucoma procedures, namely trabeculectomy and Ex-PRESS mini-shunt insertion on biomechanical properties cornea. This a prospective study. Thirty patients (30 eyes) were included in Nineteen eyes had an shunt inserted (Group 1) 11 2). examination time points for both groups one three weeks preoperatively at month 1, 6, 12 postoperativel...
Report keratoconus in two patients with a long history of wrestling without any risk factor for corneal ectasia and reviewing the possible pathogenesis. To confirm suspicion of keratoconus, corneal topography was performed using scanning slit topography system and Orbscan. In two wrestlers with the complaint of visual loss in their eyes and IOP raising, corneal topography was performed and de...
anwar versus melles deep anterior lamellar keratoplasty for keratoconus: a randomized clinical trial
purpose: to compare outcomes of two techniques (anwar vs. melles) of deep anterior lamellar keratoplasty (dalk) in patients with keratoconus. methods: this randomized double-blind clinical trial was performed on 57 eyes of 57 patients with keratoconus. patients aged 20-35 years with a clinical diagnosis of keratoconus who were contact lens intolerant and had corrected distance visual acuity (cd...
AIM To evaluate the use of accelerated corneal collagen cross-linking in the management of mild and moderate progressive keratoconus in comparison with conventional cross-linking. PATIENTS AND METHODS Prospective randomized interventional case-control clinical trial. A total 25 eyes of 18 patients were randomly divided into two groups: group A included 14 eyes that received accelerated collag...
background: to evaluate the agreement in intraocular pressure (iop) measurements by ocular response analyzer (ora) and tono-pen xl (txl) with the goldmann applanation tonometer (gat) and to examine corneal biomechanical properties in aphakic glaucoma patients with a central corneal thickness (cct) >600 µ. methods: thirty-six eyes of aphakic glaucoma patients (group 1) and 40 eyes of normal chil...
Corneal biomechanics emerged as a very hot topic for research in Ophthalmology. In this issue, Sharifipour and coworkers present an observational cross-sectional study in healthy individuals that evaluated the correlations of corneal viscoelastic properties measured by the Ocular Response Analyzer (ORA, Reichert, Buffalo, NY) with central corneal thickness (CCT) in different age groups. In this...
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