Results 171 to 180 of about 10,544 (207)

Systematic Error in Computerized Pachymetry

Ophthalmologica, 1993
In a polycentric study, the influence of some of the most common variables capable of influencing the reliability of prekeratotomy pachymetry has been evaluated. The fluctuation in a sequence of measurements from the same point on the cornea, with the patient in different positions (orthostatic and clinostatic), during progressive drying of the ...
C A, Stucchi, G, Gennari, G, Aimino, I, di Carlo, L, Bauchiero   +4 more
openaire   +2 more sources

Diabetes and pachymetry changes in pregnancy

International Ophthalmology, 2017
Purpose of this study is to evaluate changes in the central corneal thickness (CCT) in patients during the third trimester and postpartum phases of normal pregnancy, pregestational diabetes mellitus (DM), and gestational diabetes mellitus (GDM).This was a prospective study.
Florence, Santiagu, Azam, Bakhtiari, Tajunisah, Iqbal, Nurliza, Khaliddin, Van C, Lansingh, Visvaraja, Subrayan   +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

Intraoperative optical pachymetry in photorefractive keratectomy

Journal of Cataract and Refractive Surgery, 2019
To study the effect of variables on the accuracy and reliability of the optical pachymeter built into the WaveLight EX500 excimer laser during photorefractive keratectomy (PRK).John A. Moran Eye Center, University of Utah, Salt Lake City, USA.Retrospective case series.A chart review of 352 eyes (181 patients) that had excimer laser PRK was performed ...
Mark D, Mifflin, Xavier M, Mortensen
openaire   +2 more sources

Prediction of ocular irritation by corneal pachymetry

Food and Chemical Toxicology, 1987
Corneal 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
openaire   +2 more sources

Radial Keratotomy Using Central Pachymetry

Journal of Refractive Surgery, 1985
ABSTRACT: Radial keratotomy using only central pachymetry has shown to provide adequate depth of incisions and good clinical result. There were no anterior chamber perforations and achieved depth factor was 95%. A nomogram used by the authors is presented. The technique is easy to perform and may be done in a nonsterile technique preoperatively.
Richard A Villasenor, Casimir A Swinger, Kerry C Cox   +2 more
openaire   +1 more source

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

Canine corneal thickness measured by ultrasonic pachymetry

American Journal of Veterinary Research, 1991
SUMMARY 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, R D, Whitley, S A, McLaughlin, J C, Wright, J W, Drane   +4 more
openaire   +2 more sources

Measuring Central Corneal Thickness with Ultrasound Pachymetry

Optometry and Vision Science, 2003
To determine how many ultrasound pachymetry measurements are required to obtain a reasonable estimate of central corneal thickness.Five central corneal thickness measurements were obtained from each eye of 101 patients with normal corneas. The means of fewer than five readings were compared with the mean of five values for each eye to determine the ...
Tony, Realini, Kim, Lovelace
openaire   +2 more sources

Orbscan Global Pachymetry: Analysis of Repeated Measures

Optometry and Vision Science, 2005
The Orbscan II is a hybrid slit-scanning and Placido disc corneal topographer capable mapping global pachymetry over a 10-mm corneal diameter. In this study, the repeatability of the Orbscan global pachymetry was determined.Five consecutive Orbscan examinations were performed on one eye of 20 healthy volunteers by one examiner in one session.
Han-Bor, Fam, Kooi-Ling, Lim, Dan Z, Reinstein   +2 more
openaire   +2 more sources