Corneal Hysteresis (CH)
Corneal hysteresis in patients with glaucoma-like optic discs, ocular hypertension and glaucoma
... of corneal biomechanical properties and ...higher CH in patients with a diagnosis of OHT as compared to patients with glaucoma ...compared CH and CRF between patients with OHT, NTG and POAG and found ...
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<p>Corneal Hysteresis as a Biomarker of Glaucoma: Current Insights</p>
... average CH to be ...average CH of ...between CH and corneal radius, astigmatism, spherical equivalent, axial length or IOP with Goldmann applanation tonometry ...7 Corneal ...
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The role of corneal hysteresis during the evaluation of patients with possible normal-tension glaucoma
... acuity; CH, corneal hysteresis; CCT, central cornea thickness; c/d, cup/disc ratio; CV RF, cardiovascular risk factor; DM, diabetes mellitus; iOP, intraocular pressure; iOPc, compensated iOP reading ...
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Comparison of Goldmann and Pascal tonometry in relation to corneal hysteresis and central corneal thickness in nonglaucomatous eyes
... GAT, CH and CCT measurements were obtained. CH was determined using the ...the corneal diameter during a 20-millisecond period, and records two applanation events produced by the bidirectional ...
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In vivo assessment of changes in corneal hysteresis and lamina cribrosa position during acute intraocular pressure elevation in eyes with markedly asymmetrical glaucoma
... the corneal surface, while an air jet is delivered by the ...parameters, CH and CRF. The CH value provides a better characterization of the corneal contribution to IOP measurement than CCT ...
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Assessment of corneal hysteresis measured by the ocular response analyzer as a screening tool in patients with glaucoma
... Data from the charts of 63 subjects, 126 eyes, presenting to a glaucoma subspecialty clinic for the first time between 2013 and 2014 were used in a retrospective review. All measurements included were measured at their ...
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Associations of biomechanical properties of the cornea with environmental and metabolic factors in an elderly population : the ALIENOR study
... measurements. Corneal hysteresis (CH) and corneal resistance factor (CRF) are both viscoelastic parameters of the cornea obtained with the ...machine. Corneal hysteresis is ...
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Corneal biomechanical parameters and intraocular pressure: the effect of topical anesthesia
... and CH is a measure of the viscoelastic parameters of the ...the corneal hysteresis. The corneal resistance factor is defined as a linear function of both applanation ...
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Femtosecond laser-assisted astigmatic keratotomy: a review
... The corneal biomechanics evaluated included corneal hysteresis (CH), which reflects the cor- neal damping ability, and corneal resistance factor (CRF), which indicates the overall ...
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Role of corneal biomechanical properties in predicting of speed of myopic progression in children wearing orthokeratology lenses or single-vision spectacles
... in corneal hysteresis (CH), corneal resistance factor (CRF) and several parameters derived from the wave- form ...signal. CH and CRF are specific outputs from the Ocular Response ...
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Goldmann and error correcting tonometry prisms compared to intracameral pressure
... central corneal thickness (CCT measurement (Zeiss HD-OCT, Jena, Germany), corneal topography (Zeiss Atlas model 9000 Jena, Germany), di- lated funduscopy and an Ocular Response Analyzer (ORA) with ...
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The effect of flap thickness on corneal biomechanics after myopic laser in situ keratomileusis using the M-2 microkeratome
... The corneal hysteresis (CH) and corneal resistance factor (CRF) were measured preoperatively and 3 months after surgery, using the Ocular Response Analyzer ® ...
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<p>Improved Efficacy of Topical Latanoprost 0.005% Demonstrated by Corneal Biomechanical Correcting Modified Goldmann Prism</p>
... Central corneal thickness (CCT) and corneal hysteresis (CH) were also ...(p=0.999). CH increased significantly with latanoprost treatment by an average of ...
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Ocular Response Analyzer to Assess Age Related Biomechanical Characteristics of the Cornea in a Taiwanese Population
... properties. Hysteresis is a parameter to describe the bio- mechanical properties of the cornea ...the corneal biomechanical properties until the use of Reichart ocular response analyzer (ORA) ...Both ...
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The effect of prostaglandin analogs on the biomechanical properties and central thickness of the cornea of patients with open-angle glaucoma: a 3-year study on 108 eyes
... with prostaglandin analogs (PGAs) is the treatment of choice for millions of patients. For the past few years, the clinical gold standard for measuring IOP was Goldmann applanation tonometry (GAT). Recent studies have ...
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<p>Evaluation of Corneal Biomechanical Parameters in Psoriasis Patients: A Controlled Study</p>
... The effect of psoriasis on the cornea has not been exten- sively studied. The main pathology that has been reported to affect the cornea secondary to psoriasis is keratoconjunctivi- tis sicca; however, the effect of ...
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Original Article Effect of a 2-mm incision on keratometry and visual quality after small-incision lenticule extraction
... Several indexes were used to demonstrate visual quality, including HOAs, spherical aberra- tion, coma, and PSF. Visual quality decreased as the HOAs increased after SMILE surgery; as the measuring diameter expanded, the ...
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Two-year topographic and densitometric outcomes of accelerated (45 mW/cm2) transepithelial corneal cross-linking for keratoconus: a case-control study
... equal dosage. Meanwhile, A-CXL procedures could be performed with or without epithelium [15, 25]. A meta-analysis [26] concluded that, in general, ATE-CXL is effective and safe for KC stabilization, however, C-CXL re- ...
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Corneal keloid: four case reports of clinicopathological features and surgical outcome
... of corneal keloid is made by clinical and pathological ...Clinically, corneal keloid appears as a solitary, pearly white, elevated, localized lesion with a smooth and shiny surface which is well- demarcated ...
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THE EFFECT OF TOPICAL BEVACIZUMAB ON CORNEAL NEOVASULARIZATION IN A RABBIT MODELAli Kasiri and Hesam HedayatiDOWNLOAD/VIEW
... sutures were placed radially, at midstromal depth, at the 10-, 12-, and 2-o’clock positions on the corneas of the right eyes, avoiding corneal perforation. Topical ciprofloxacin was instilled twice a day to ...
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