Results 171 to 180 of about 9,851 (221)

Epithelial, Stromal, and Corneal Pachymetry Changes during Orthokeratology

Optometry and Vision Science, 2009
To describe epithelial, stromal, and corneal thickness profile changes induced by orthokeratology treatment.This is a case report of a mild myopic patient (OD -3.25/-0.50 x 172 and OS -3.25/-0.50 x 45) treated with orthokeratology lenses. The patient was assessed before treatment (following 2 weeks of no orthokeratology contact lens wear) and during ...
Dan Z, Reinstein, Marine, Gobbe, Timothy J, Archer, Darren, Couch, Basil, Bloom   +4 more
openaire   +2 more sources

Simultaneous Estimation of Corneal Topography, Pachymetry, and Curvature

IEEE Transactions on Medical Imaging, 2018
Identification 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, Ram V. Iyer, Steven M. Mathews   +2 more
openaire   +2 more sources

Incorporating corneal pachymetry into the management of glaucoma

Journal of Cataract and Refractive Surgery, 2009
Intraocular 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, M. Mete, M. Figus, P. Frezzotti   +3 more
openaire   +6 more sources

Intraoperative corneal pachymetry in eyes having radial keratotomy

Journal of Cataract and Refractive Surgery, 1995
We prospectively studied 45 eyes that had radial keratotomy for correction of myopia to determine whether significant changes in corneal thickness occurred during the surgical procedure and which paracentral corneal region was the thinnest consistently. We used a standard bidirectional technique with a diamond knife.
S B, Levey, H R, Katz, D A, Abrams
openaire   +2 more sources

Corneal topography pachymetry

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
openaire   +1 more source

Corneal Hysteresis, Resistance Factor, Topography, and Pachymetry After Corneal Lamellar Flap

Journal of Refractive Surgery, 2007
ABSTRACT PURPOSE: To measure prospectively the early changes in corneal hysteresis, topography, and pachymetry after the creation of a stromal flap cut without laser photoablation. METHODS: A 37-year-old man was referred for a bioptic procedure to correct for compound myopic astigmatism in the left eye.
Damien, Gatinel, Slim, Chaabouni, Pierre-Alexandre, Adam, Jacques, Munck, Michel, Puech, Thanh, Hoang-Xuan   +5 more
openaire   +2 more sources

Intraoperative Corneal Thickness Measurement Using Optical Coherence Pachymetry and Corneo-Gage Plus Ultrasound Pachymetry

Journal of Refractive Surgery, 2008
Purpose To compare the central corneal thickness measured by online optical coherence pachymetry (OCP) and ultrasound pachymetry in normal cornea. Methods Forty-eight right eyes of 48 consecutive patients were enrolled in this prospective study.
Jenn-Chyuan, Wang, Catey, Bunce, Hung-Ming, Lee   +2 more
openaire   +2 more sources

Corneal pachymetry in normal and keratoconic eyes

Journal of Cataract and Refractive Surgery, 2004
To compare corneal thickness measurements using Orbscan II (OII) and ultrasonic (US) pachymetry in normal and in keratoconic eyes.Eye Department, Heartlands and Solihull NHS Trust, Birmingham, United Kingdom.Central corneal thickness (CCT) was measured by means of OII and US pachymetry in 1 eye of 72 normal subjects and 36 keratoconus patients.
D, Gherghel, S L, Hosking, S, Mantry, S, Banerjee, S A, Naroo, S, Shah   +5 more
openaire   +2 more sources

Corneal densitometry and its correlation with age, pachymetry, corneal curvature, and refraction

International Ophthalmology, 2016
To determine normative corneal densitometry values in relation to age, sex, refractive error, corneal thickness, and keratometry, measured using the Oculus Pentacam system.Three hundred and thirty-eight healthy subjects (185 men; 153 women) with no corneal disease underwent an exhaustive ocular examination.
Nuria, Garzón, Francisco, Poyales, Igor, Illarramendi, Javier, Mendicute, Óscar, Jáñez, Pedro, Caro, Alfredo, López, Francisco, Argüeso   +7 more
openaire   +2 more sources

Comparison of corneal pachymetry using ultrasound and Orbscan II

Journal of Cataract and Refractive Surgery, 2002
To compare Orbscan II pachymetry with ultrasonic pachymetry in eyes having corneal refractive surgery.Instituto Oftalmológico de Alicante, Alicante, Spain.In this comparative prospective study, 72 eyes (36 patients) were divided into 4 groups: Group 1, 16 eyes with haze after photorefractive keratectomy (PRK); Group 2, 12 eyes with no haze after PRK ...
Mohamed A, Fakhry, Alberto, Artola, José I, Belda, Ma José, Ayala, Jorge L, Alió   +4 more
openaire   +2 more sources