Results 21 to 30 of about 5,849 (177)

Variation analysis and influencing factors in different corneal morphologies measured by the Pentacam system [PDF]

open access: yesYixue xinzhi zazhi, 2021
Objective To explore the variation in different corneal morphologies in Pentacam Scheimpflug tomography and the feasibility of assisting diagnosis of abnormal corneal posterior surface height.
Dong-Qing YUAN, Hua ZHONG, Qin CHEN
doaj   +1 more source

Kinetic pupillary size using Pentacam in myopia

open access: yesFrontiers in Neuroscience, 2022
PurposeTo compare if the kinetic pupillary changes differs between high myopia (HM) and low/moderate myopia by Pentacam.SettingChinese People’s Liberation Army (PLA) General Hospital, Beijing, China.DesignComparative study.MethodsIn this cross-sectional retrospective study, 44 eyes of 44 patients were recruited in the Refractive Surgery Center of ...
Kaixiu Li   +6 more
openaire   +3 more sources

Repeatability and Agreement of Central Corneal Thickness and Keratometry Measurements between Four Different Devices

open access: yesJournal of Ophthalmology, 2017
Background. To estimate repeatability and comparability of central corneal thickness (CCT) and keratometry measurements obtained by four different devices in healthy eyes. Methods.
Laszlo Kiraly   +3 more
doaj   +1 more source

Pentacam – A Corneal Tomography System

open access: yesDelhi Journal of Ophthalmology, 2020
Investigative technology in the field of corneal refractive surgery has seen a rapid evolution in the last two decades. The shift from corneal topography system to corneal tomography analysis has not only improved the accuracy of corneal contour analysis but has also given an opportunity to explore various additional findings ...
Abhishek Upadhyaya   +4 more
openaire   +3 more sources

Repeatability of the Pentacam HR in Various Grades of Keratoconus

open access: yesAmerican Journal of Ophthalmology, 2020
To evaluate the repeatability of an extensive number of relevant indices with the Pentacam HR in keratoconus of varying severity and normal eyes.Reliability analysis.This study was performed at Antwerp University Hospital, Belgium, and enrolled 20 healthy volunteers (20 eyes) and 69 patients (69 eyes) with keratoconus.
Elke O. Kreps   +5 more
openaire   +3 more sources

Precision of anterior and posterior corneal curvature measurements taken with the Oculus Pentacam

open access: yesAfrican Vision and Eye Health, 2016
In the era of rapid advances in technology, new ophthalmic instruments are constantly influencing health sciences and necessitating investigations of the accuracy and precision of the new technology.
Elizabeth Chetty
doaj   +1 more source

Determination of the Elastic Modulus of Cornea of Myopia Patients Based on Pentacam and Corvis ST

open access: yesTaiyuan Ligong Daxue xuebao, 2022
The biomechanical properties of the cornea are of great significance to corneal refractive surgery and postoperative corneal deformation, development, and pathology. In this paper, a geometric model of the cornea of myopia was established on the basis of
Qiaoyu MENG   +4 more
doaj   +1 more source

Corneal thickness measurements with Scheimpflug and slit scanning imaging techniques in keratoconus

open access: yesJournal of Current Ophthalmology, 2017
Purpose: To determine the repeatability of corneal thickness measurements with Scheimpflug (Pentacam) and slit scanning (Orbscan) imaging techniques in different grades of keratoconus.
Mohammad Aghazadeh Amiri   +6 more
doaj   +1 more source

Cataract Grading in Pure Senile Cataracts: Pentacam versus LOCS III

open access: yesJournal of Ophthalmic & Vision Research, 2022
Purpose: To determine the diagnostic accuracy of Pentacam Cataract Grading Scale (PCGS) versus the Lens Opacities Classification System (LOCS III) in scaling pure age-related cataract.
Mohammad Mirzaie   +4 more
doaj   +1 more source

Comparison of keratometry versions in patients with corneal astigmatism

open access: yesРоссийский офтальмологический журнал, 2022
Purpose: to compare the corneal power at main meridians, the magnitude and the axis of corneal astigmatism and the reproducibility of measurements taken three times with different types of biometers.Material and methods.
A. N. Kulikov   +2 more
doaj   +1 more source

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