Results 11 to 20 of about 132,515 (201)

Optimal incision sites to reduce corneal aberration variations after small incision phacoemulsification cataract surgery [PDF]

open access: yesInternational Journal of Ophthalmology, 2016
AIM: To analyze the effect of steep meridian small incision phacoemulsification cataract surgery on anterior, posterior and total corneal wavefront aberration.
Ling Chu   +6 more
exaly   +3 more sources

Interocular high-order corneal wavefront aberration symmetry

open access: yesJournal of the Optical Society of America A: Optics and Image Science, and Vision, 2006
The interocular symmetry of the high-order corneal wavefront aberration (WA) in a population of myopic eyes was analyzed before and after photorefractive keratectomy (PRK). The preoperative and one-year postoperative corneal aberration data (from third to seventh Zernike orders) for 4- and 7-mm pupils from right and left eyes were averaged after ...
Marco Lombardo   +2 more
exaly   +5 more sources

Association between Offset of the Pupil Center from the Corneal Vertex and Wavefront Aberration [PDF]

open access: yesJournal of Optometry, 2008
Purpose: To investigate the influence of offsets of the pupil center from the corneal vertex on wavefront aberrations in the anterior cornea and the whole eye.
Xiangtian Zhou, Fan Lu, Ji C He
exaly   +4 more sources

Stability of corneal topography and wavefront aberrations in young Singaporeans [PDF]

open access: yesClinical and Experimental Optometry, 2013
The aim was to investigate the differences between and variations across time in corneal topography and ocular wavefront aberrations in young Singaporean myopes and emmetropes.We used a videokeratoscope and wavefront sensor to measure the ocular surface topography and wavefront aberrations of the total-eye optics in the morning, midday and late ...
Zhu, Minxia, Collins, Michael, Yeo, Anna
openaire   +5 more sources

Evaluations of wavefront aberrations and corneal surface regularity in dry eye patients measured with OPD Scan III [PDF]

open access: yesInternational Journal of Ophthalmology, 2022
AIM: To compare the wavefront aberrations and corneal surface regularity between dry eye (DE) patients and normal subjects and assess its diagnostic performance for DE measured with OPD Scan-III.
Hong Qi
exaly   +2 more sources

Combination of phototherapeutic keratectomy and wavefront-guided photorefractive keratectomy for the treatment of Thiel-Behnke corneal dystrophy

open access: yesIndian Journal of Ophthalmology, 2017
Phototherapeutic keratectomy (PTK) has been used to treat anterior corneal dystrophy but may cause hyperopic shift or corneal high-order aberration.
Chia-Chieh Hsiao, Yu-Chih Hou
doaj   +2 more sources

Wavefront-Guided and Wavefront-Optimised Laser Treatments

open access: yesTürk Oftalmoloji Dergisi, 2012
Optical aberrations of the eye are the errors of the optical system that limit the resolution, contrast and amount of detail in the image formed on the retina. Wavefront technology allows us to measure these optical aberrations, calculate mathematically,
Canan Aslı Utine
doaj   +2 more sources

The Effect of Artificial Tears on Corneal Higher Order Aberrations in Dry Eye Patients

open access: yesTürk Oftalmoloji Dergisi, 2014
Purpose: To assess the effects of artificial tears on corneal higher order aberrations in dry eye patients. Materials and Methods: 30 right eyes of 30 newly diagnosed dry eye patients were evaluated in this prospective study.
Hasan Ali Bayhan   +2 more
doaj   +2 more sources

Population spherical aberration: associations with ametropia, age, corneal curvature, and image quality

open access: yesClinical Ophthalmology, 2013
Amanda C Kingston,1,2 Ian G Cox11Bausch + Lomb, Rochester, NY, USA; 2Department of Biomedical Engineering, University of Rochester, Rochester, NY, USAPurpose: The aim of this analysis was to determine the total ocular wavefront aberration values of a ...
Kingston AC, Cox IG
doaj   +1 more source

Changes in higher-order aberrations: toric implantable collamer lens implantation versus ICL combined with limbal relaxing incision [PDF]

open access: yesFrontiers in Ophthalmology
PurposeTo compare the safety, efficacy and changes in corneal aberrations between Implantable Collamer Lens (ICL) combined with Limbal Relaxing Incision (LRI) and Toric ICL (TICL) implantation for moderate astigmatism (1.00-1.75 D).MethodsA retrospective
Zhichao Liu   +8 more
doaj   +2 more sources

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