Results 111 to 120 of about 76,743 (159)
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Prediction of ocular irritation by corneal pachymetry
Food and Chemical Toxicology, 1987Corneal pachymetry performed 3 days after application of a variety of test materials to the rabbit eye was found to be predictive of the eye irritation classification determined by observing the ocular response for 21 days. The test materials included NaOH, methanol, isopropanol, acetone, cyclohexanone, hexane and a shampoo. A 0.1-ml sample of the test
R L, Morgan, S S, Sorenson, T R, Castles
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Incorporating corneal pachymetry into the management of glaucoma
Journal of Cataract and Refractive Surgery, 2009Intraocular pressure (IOP) results from a dynamic balance between aqueous humor formation and outflow. The simplest technique to measure IOP is indentation tonometry. Another technique is applanation. These methods are related to the elasticity of the eye, which mainly depends on its thickness and hysteresis.
IESTER, MICHELE +3 more
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Canine corneal thickness measured by ultrasonic pachymetry
American Journal of Veterinary Research, 1991SUMMARY Ultrasonic pachymetry was used to measure central, superior peripheral, and temporal peripheral corneal thicknesses of 75 dogs (150 eyes) with normal corneas, anterior chambers, and intraocular pressure. Mean corneal thickness averaged over the 2 eyes, 3 locations, and 75 dogs was 562 ± 6.2 μm.
B C, Gilger +4 more
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Cornea, 2008
To assess the repeatability of two optical techniques for measurement of central corneal thickness and to compare the validity of these techniques with standard ultrasound pachymetry.Corneal thickness was measured twice with Konan optical pachymetry, Orbscan optical pachymetry, and 3 times by conventional ultrasound pachymetry in 100 eyes of 50 healthy
Amarilda, Christensen +2 more
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To assess the repeatability of two optical techniques for measurement of central corneal thickness and to compare the validity of these techniques with standard ultrasound pachymetry.Corneal thickness was measured twice with Konan optical pachymetry, Orbscan optical pachymetry, and 3 times by conventional ultrasound pachymetry in 100 eyes of 50 healthy
Amarilda, Christensen +2 more
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Comparison of ultrasonic pachymetry with orbscan in corneal haze
Graefe's Archive for Clinical and Experimental Ophthalmology, 2007To compare the results of ultrasonic and Orbscan pachymetry in corneal haze not related to surgery.An institutionally based, prospective, controlled clinical trial included 40 eyes of 40 consecutive patients with corneal haze not related to surgery. Fifty normal eyes were used as a control group to calculate the customized acoustic factor. Corneal haze
Rana, Altan-Yaycioglu +2 more
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Corneal thickness measured by ultrasonic pachymetry in cats
American Journal of Veterinary Research, 1993SUMMARY Ultrasonic pachymetry was used to measure central superior peripheral, and temporal peripheral corneal thickness of 35 cats (70 eyes) with normal corneas, anterior chambers, and intraocular pressures. Mean central corneal thickness for both eyes in 3 locations for 35 cats was 578 ± 64 µm.
B C, Gilger +3 more
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Simultaneous Estimation of Corneal Topography, Pachymetry, and Curvature
IEEE Transactions on Medical Imaging, 2018Identification of objective criteria to correctly diagnose ectatic diseases of the cornea or to detect early stages of corneal ectasia is of great interest in ophthalmology and optometry. Metrics for diagnosis typically employed are curvature maps (axial/sagittal, tangential); elevation map of the anterior surface of the cornea with respect to a ...
Farzana Nasrin +2 more
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1997
For refractive surgical procedures and medical therapy a correct assessment of corneal thickness is crucial. We conducted corneal ultrasound pachymetry in 200 eyes, and found that the peripheral thickness was significantly greater than central thickness (0.669 versus 0.54 mm). The thinnest point was below the center.
U. Fries, C. Ohrloff, R. Makabe
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For refractive surgical procedures and medical therapy a correct assessment of corneal thickness is crucial. We conducted corneal ultrasound pachymetry in 200 eyes, and found that the peripheral thickness was significantly greater than central thickness (0.669 versus 0.54 mm). The thinnest point was below the center.
U. Fries, C. Ohrloff, R. Makabe
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Measuring Central Corneal Thickness with Ultrasound Pachymetry
Optometry and Vision Science, 2003ABSTRACT: Purpose. To determine how many ultrasound pachymetry measurements are required to obtain a reasonable estimate of central corneal thickness. Methods. Five central corneal thickness measurements were obtained
Tony, Realini, Kim, Lovelace
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Comparison of Four Corneal Pachymetry Techniques in Corneal Refractive Surgery
Journal of Refractive Surgery, 2004ABSTRACT PURPOSE: To assess the effectiveness of optical and ultrasonic pachymetry when examining corneas of patients before and after laser in situ keratomileusis (LASIK). METHODS: We conducted a prospective study of 25 patients (50 eyes) who had LASIK for myopia or myopic astigmatism (mean spherical equivalent refraction -4.80 ± 3.
Jaime, Javaloy +4 more
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