Results 101 to 110 of about 77,514 (194)

Femtosecond laser-assisted corneal intrastromal negative meniscus lenticule implantation with accelerated collagen crosslinking (FILAC) in advanced keratoconus in Indian eyes: A prospective interventional study

Indian Journal of Ophthalmology
Purpose: To study the outcomes of femtosecond laser-assisted intrastromal negative meniscus lenticule implantation with accelerated corneal collagen crosslinking (FILAC) in advanced keratoconus.
Rajesh Sinha, Shahnaz Anjum, Kartikeya Gupta, Tushar Agarwal, Namrata Sharma, Sridevi Nair, Shrishti Kapoor, Jeewan S Titiyal   +7 more
doaj   +1 more source

Posterior corneal changes with orthokeratology

, 2004
Purpose. To investigate changes in corneal thickness and the radius of curvature of the posterior corneal surface after orthokeratology (OK) rigid lens wear. Methods.
Garner, Leon F., Gamble, Greg, Craig, Jennifer P., Owens, Helen   +3 more
core   +1 more source

Comparison of anterior corneal aberrometry, keratometry and pupil size with Scheimpflug tomography and ray tracing aberrometer in moderate and high refractive error

The Scientific Temper
Background: Keratometry is essential for assessing corneal curvature, refractive power, and astigmatism. Advances in imaging, such as topography and tomography, have improved measurement accuracy for surgical planning and disease diagnosis. The Pentacam HR® uses Scheimpflug imaging for higher-order aberrations (HOAs), while iTrace® employs ray tracing ...
Aishwarya Jha, Jyoti Gangta, Neha Kapur
openaire   +1 more source

Intrastromal corneal ring--one-year results of first implants in humans: a preliminary nonfunctional eye study

, 1993
BACKGROUND: The Intrastromal Corneal Ring (ICR) is a new investigational medical device designed to alter corneal curvature without surgical intervention in the central cornea.
Walton Nosé, Renato A Neves, Nosé, Walton [UNIFESP], Neves, Renato Augusto [UNIFESP], Schanzlin, David J., Belfort, Rubens Junior [UNIFESP], Rubens Belfort, David J Schanzlin   +7 more
core   +1 more source

Synchronous phase-demodulation of concentric-rings Placido mires in corneal topography and wavefront aberrometry (theoretical considerations)

, 2012
This paper presents a digital interferometric method to demodulate Placido fringe patterns. This method uses a computer-stored conic-wavefront as reference carrier. Even though, Placido mires are widely used in corneal topographers. This is not however a paper on corneal topography and/or its clinical use.
openaire   +2 more sources

Analysis of third and fourth corneal high-order aberrations before and after small incision lenticule extraction (SMILE) in myopic and myopic astigmatic eyes using ray tracing aberrometry

Beni-Suef University Journal of Basic and Applied Sciences
Abstract Background Aim is to analyze alterations in third and fourth corneal higher-order aberrations using a ray tracing aberrometer (iTrace) induced by SMILE (small incision lenticule extraction) refractive surgery on Algerian patients; and also to investigate how corneal aberrations vary with spherical equivalent (SE)
Sarra Belgacem, Saoussene Habani, Daoud Guernazi, Fatiha Kail, Selma Chiali   +4 more
openaire   +2 more sources

Effect of Hypoxia on Central and Peripheral Corneal Thickness and Corneal Topography [PDF]

, 1975
Epithelial anoxia causes increases in both central and peripheral corneal thickness. The thickness increase is eliminated when the cornea is exposed to 2% oxygen.
Carney, Leo G.
core  

Bevacizumab for the Treatment of Corneal Neovascularization

, 2011
Corneal neovascularization (NV) is a severe complication associated with inflammatory or infectious disorders of the cornea. NV may lead to severe reduction in visual acuity and poor prognosis for corneal transplantation and excimer laser refractive ...
CHEN, WEI-LI;CHEN, YAN-MING;CHU, HSIAO-SANG;TSAI, TZU-YUN;HU, FUNG-RONG, 陳偉勵;陳彥名;朱筱桑;蔡紫筠;胡芳蓉   +1 more
core  

A survey of corneal curvature changes from corneal lens wear

, 1997
The fact that variations in corneal curvature occur as a result os wearing PMMA contact lenses has been reported many times (1-8). The nature of these curvature changes and the factors influencing them are, however, still not well defined.
Bailey, Ian L., Carney, Leo G.
core  

Corneal endothelial changes after accelerated corneal collagen cross-linking in keratoconus and postLASIK ectasia [PDF]

, 2016
Amani E BadawiDepartment of Ophthalmology, Mansoura University, Mansoura, EgyptPurpose: The purpose of this study was to evaluate the effects of accelerated cross-linking (CXL) on corneal endothelium in keratoconus and postlaser-assisted in situ ...
Badawi AE
core