Results 21 to 30 of about 132,515 (201)

Clinical and Wavefront Outcomes After Femtosecond Laser Versus Mechanical Microkeratome Lasik: A Prospective Paired-Eye Comparative Study [PDF]

Bioengineering
Background/Objectives: The technique used for flap creation in laser in situ keratomileusis (LASIK) may influence postoperative optical quality and visual outcomes. This prospective randomized paired-eye study compared higher-order aberrations (HOAs) and
Sophie-Charlotte Drogge, Andreas J. Kreis, Ivo Guber, Valentin Pajic, Vladimir Canadanovic, Zeljka Cvejic, Martina Kropp, Gabriele Thumann, Eline De Clerck, Mirko Resan, Bogdan Resan, Bojan Pajic   +11 more
doaj   +2 more sources

Corneal wavefront aberration measured by a rotary scanning system

Acta Ophthalmologica, 2009
Abstract Purpose Corneal wavefront aberration measurements are important in many areas such as refractive surgery, diagnosis and management of corneal disease as well as to understand the eye’s optical system. In this work the authors present the corneal anterior and posterior surface wavefront aberrations measured by an optical corneal tomographer ...
Sandra Franco
exaly   +2 more sources

Effect of Subepithelial Pterygium Pedicle Length on Anterior Corneal Keratometry and Wavefront Aberrations. [PDF]

Korean J Ophthalmol
Purpose: To introduce subepithelial pterygium pedicle (SPP) and to investigate the effect of SPP length on the anterior corneal curvature including keratometry and aberrations.Methods: In this single-center retrospective cohort, 72 eyes of 72 patients with primary nasal pterygium were analyzed using anterior segment (AS) swept-source optical coherence ...
Jang E, Lee SH, Kim KW.
europepmc   +3 more sources

Reliability Measurement of Corneal Wavefront Aberrations using Corneal Videokeratograph Atlas 9000 [PDF]

IIUM Medical Journal Malaysia, 2020
Introduction: Accurate corneal wavefront aberration measurements are essential in determining patient’s suitability, vision outcomes and patient satisfaction in laser refractive surgeries. This study aimed to evaluate the reliability measurement of higher-order aberration (HOA) using corneal videokeratograph Atlas 9000.
Noorshazana Mat Rejab @ Md Rejab, Mohd Radzi Hilmi, Khairidzan Mohd Kamal, Md Muziman Syah Md Mustafa   +3 more
openaire   +3 more sources

Distribution of corneal spherical aberration in a Tanzanian population. [PDF]

PLoS ONE, 2019
PurposeTo investigate the distribution of corneal spherical aberration (SA) in Tanzanian people of African descent, and to examine the correlation between corneal SA and ocular parameters.DesignCross-sectional population-based study.MethodsResidents aged
Hiroki Asano, Takahiro Hiraoka, Yusuke Seki, Teppei Shibata, Hiromi Osada, Takanori Saruta, Natsuko Hatsusaka, Fukumi Fujikake, Yoshiaki Tabata, Cellina Mhina, Anna Sanyiwa, Tetsuro Oshika, Hiroshi Sasaki   +12 more
doaj   +2 more sources

Effects of intraocular pressure and aspheric transition zone ablation profile on corneal biomechanics after conventional refractive surgery [PDF]

E3S Web of Conferences, 2021
Our Purpose is to study the effects of intraocular pressure (IOP) and aspheric transition zone (ATZ) on corneal biomechanics after pure hyperopia correction by using the finite element analysis (FEA).
Du Ruirui, Fang Lihua, Song Yinyu, Tao Xingming, Lin Luchao   +4 more
doaj   +1 more source

Comparison of corneal aberrations from anterior segment swept source OCT versus Placido-topography combined spectral domain OCT in cataract patients

Eye and Vision, 2023
Background To comprehensively evaluate the agreement of component corneal aberrations from the newly updated wavefront analysis software of a swept-source optical coherence tomographer (SS-OCT) and a referential Placido-topography combined OCT device in ...
Stefan Georgiev, Manuel Ruiss, Andreea Dana-Fisus, Rainer A. Leitgeb, Oliver Findl   +4 more
doaj   +1 more source

Ultra-High Resolution Optical Aberrometry in Patients with Keratoconus: A Cross-Sectional Study

Ophthalmology and Therapy, 2023
Introduction This study performs optical aberration assessment in patients using a novel ultra-high-resolution device. The objective of this study is to analyze optical aberrations, especially the very high order wavefront (more than 10th order of ...
Gonzalo Velarde-Rodriguez, Carolina Belda-Para, Miriam Velasco-Ocaña, Juan M. Trujillo-Sevilla, Javier Rodríguez-Martin, Ignacio Jiménez-Alfaro, José M. Rodriguez-Ramos, Nicolas Alejandre-Alba   +7 more
doaj   +1 more source

Changes of high order aberrations after photorefractive keratectomy (PRK) and FemtoLASIK

Российский офтальмологический журнал, 2022
Purpose: a comparative study of corneal and total wavefront aberration changes after traditional PRK and FemtoLASIK.Material and methods. Corneal and total wavefront aberrations were studied on OPD-Scan III aberrometer (Nidek) in 63 patients (126 eyes ...
N. V. Khodzhabekyan, A. T. Khandzhyan, E. P. Tarutta, S. G. Harutyunyan, M. D. Sengaeva   +4 more
doaj   +1 more source

Long-term visual quality after small incision lenticule extraction (SMILE) and laser assisted subepithelial keratomileusis (LASEK) for low myopia

BMC Ophthalmology, 2022
Background Few studies have reported the visual outcomes of small-incision lenticule extraction (SMILE) and laser-assisted subepithelial keratomileusis (LASEK) for myopia correction.
Mengjun Fu, Meiyan Li, Ruoyan Wei, Chuanwei Zhang, Yangyi Huang, Lingling Niu, Xiaoying Wang, Haorun Zhang, Xingtao Zhou   +8 more
doaj   +1 more source