Results 21 to 30 of about 13,158 (161)

A comparison of two conjunctival rotation autograft techniques in primary pterygium surgery. [PDF]

open access: yes, 2017
PURPOSE: To compare the effects of 90° and 180° conjunctival rotational autograft (CRA) techniques used in primary pterygium surgery. METHODS: Forty-five patients were included in this retrospective study. Visual acuity (VA), corneal topography, and auto-
Aksoy, Umit   +7 more
core   +2 more sources

Effect of Flat Cornea on Visual Outcome after LASIK

open access: yesJournal of Ophthalmology, 2015
Purpose. To evaluate the effect of preoperative and postoperative keratometry on the refractive outcome after laser in situ keratomileusis (LASIK) for moderate and high myopia. Methods.
Engy Mohamed Mostafa
doaj   +1 more source

Repeatability and agreement of five imaging systems for measuring anterior segment parameters in healthy eyes

open access: yesIndian Journal of Ophthalmology, 2017
Purpose: The purpose of this study is to assess the repeatability and agreement of five imaging devices, namely, the Pentacam (Oculus), Sirius (CSO), Orbscan IIz (Bausch and Lomb), Corvis (Oculus), and ultrasound pachymetry (UP, Tomey) in measuring steep
Mukesh Kumar   +4 more
doaj   +1 more source

Corneal collagen cross-linking for treating keratoconus. [PDF]

open access: yes, 2015
BACKGROUND: Keratoconus is a condition of the eye that affects approximately 1 in 2000 people. The disease leads to a gradual increase in corneal curvature and decrease in visual acuity with consequent impact on quality of life.
Amissah-Arthur, Kwesi N   +7 more
core   +1 more source

Meta-analysis of optical lowcoherence reflectometry versus partial coherence interferometry biometry [PDF]

open access: yes, 2017
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the ...
Huang, Jinhai   +6 more
core   +1 more source

A comparative study of autokeratometric and Scheimpflug keratometric measurements of the anterior corneal surface: results for a single subject

open access: yesAfrican Vision and Eye Health, 2007
One purpose of the broader study was to determine whether keratometric measurements obtained with an autokeratometer (Nidek ARK-700) would be comparable with those measured using the Oculus Pentacam(model 70700).
S. Mathebula, A. Rubin
doaj   +1 more source

Biomechanical corneal changes induced by different flap thickness created by femtosecond laser [PDF]

open access: yes, 2011
OBJECTIVE: To evaluate the impact of the creation of corneal flaps at different thicknesses on the biomechanical properties of swine corneas. METHOD: Twelve swine eyes were obtained to form two groups: 100 μm flap thickness and 300 μm flap ...
MEDEIROS, Fabricio W.   +3 more
core   +1 more source

Comparing surgically induced astigmatism calculated by means of simulated keratometry versus total corneal refractive power [PDF]

open access: yes, 2018
Purpose: To evaluate surgically induced astigmatism as computed by means of either simulated keratometry (KSIM) or total corneal refractive power (TCRP) after temporal incisions.
Calvo Sanz, Jorge A.   +7 more
core   +2 more sources

The relationship between central corneal thickness and corneal curvature in adult Nigerians

open access: yesAfrican Vision and Eye Health, 2011
Purpose: The aim of this study was to provide average values for central corneal thickness (CCT) and corneal curvature (CC) and also to determine a regression model for the relationship between CCT and CC in adult Nigerians without glaucoma. Methods: A
E. Iyamu, N. M. Eze
doaj   +1 more source

Uso de lentes intraoculares tóricas no tratamento cirúrgico de astigmatismo [PDF]

open access: yes, 2014
Correction of corneal astigmatism is a key element of cataract surgery, since post-surgical residual astigmatism can compromise the patient's uncorrected visual acuity.
Koch, Douglas D.   +4 more
core   +3 more sources

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