Results 51 to 60 of about 24,361 (241)

Eye Tracker Accuracy: Quantitative Evaluation of the Invisible Eye Center Location

open access: yes, 2017
Purpose. We present a new method to evaluate the accuracy of an eye tracker based eye localization system. Measuring the accuracy of an eye tracker's primary intention, the estimated point of gaze, is usually done with volunteers and a set of fixation ...
Cattin, Philippe C., Wyder, Stephan
core   +1 more source

Epithelial ingrowth following laser in situ keratomileusis (LASIK): prevalence, risk factors, management and visual outcomes [PDF]

open access: yes, 2018
The number of laser in situ keratomileusis (LASIK) procedures is continuing to rise. Since its first application for correcting simple refractive errors over 25 years ago, the role of LASIK has extended to treat other conditions, including ...
Danjoux, Jean-Pierre   +2 more
core   +1 more source

Comparison of changes in refractive error and corneal curvature following small-incision lenticule extraction and femtosecond laser-assisted in situ keratomileusis surgery

open access: yesIndian Journal of Ophthalmology, 2018
Purpose: To compare visual acuity, refractive error, corneal curvature, and the stability of these parameters during the early postoperative period following small-incision lenticule extraction (SMILE) and femtosecond laser-assisted in situ ...
Ya L Zhang   +5 more
doaj   +1 more source

Long-Term Results after DMEK (Descemet’s Membrane Endothelial Keratoplasty) [PDF]

open access: yes, 2020
Ziel der Arbeit: Evaluation der langfristigen Ergebnisse sowie der Komplikationsrate nach Descemet’s Membran Endothelialen Keratoplastik (DMEK) Methoden: Eine cross-sectional, Fall-Serien Studie.
Wardeh, Rima
core   +1 more source

Refraction changes in the anterior and posterior corneal surfaces during the early postoperative period following sinus trabeculectomy [PDF]

open access: yesКлиническая офтальмология, 2023
V.V. Averich, A.V. Volzhanin, G.B. Egorova Krasnov Research Institute of Eye Diseases, Moscow, Russian Federation Aim: to evaluate keratotopography of the anterior and posterior corneal surfaces in the early postoperative period following ...
V.V. Averich   +2 more
doaj  

Microstructure and growth of the lenses of schizochroal trilobite eyes [PDF]

open access: yes, 2013
Lenses within the schizochroal eyes of phacopine trilobites are made principally of calcite and characterisation of them using light microscopy and high-resolution electron imaging and diffraction has revealed an array of microstructural arrangements ...
Lee, Martin R.   +2 more
core   +1 more source

Correlation Factors for Posterior Corneal Curvature after Myopic LASIK

open access: yesSiriraj Medical Journal, 2008
Objective: To evaluate the correlation factors for the posterior corneal curvature after myopic LASIK. Methods: The retrospective study of 92 eyes which underwent myopic LASIK was conducted.
Sabong Srivannaboon   +1 more
doaj  

Assessment of posterior corneal surface changes after photorefractive keratectomy in moderate myopia

open access: yesJournal of the Egyptian Ophthalmological Society, 2016
Aim The aim of this work was to study the changes that occur in the posterior corneal surface after photorefractive keratectomy (PRK) in moderate myopia using pentacam.
Tamer H El-Sersy
doaj   +1 more source

Influence of corneal astigmatism, corneal curvature and meridional differences on corneal hysteresis and corneal resistance factor [PDF]

open access: yesClinical and Experimental Optometry, 2011
This study investigated the influence of corneal astigmatism, corneal curvature and meridional differences on corneal hysteresis (CH) and the corneal resistance factor (CRF) in a group of normal Chinese persons.Ninety-five participants were recruited and data from the eye with higher corneal astigmatism were analysed. The anterior corneal curvature was
Yin-zhi, Wong, Andrew K C, Lam
openaire   +2 more sources

Topical rosiglitazone is an effective anti-scarring agent in the cornea [PDF]

open access: yes, 2013
Corneal scarring remains a major cause of blindness world-wide, with limited treatment options, all of which have side-effects. Here, we tested the hypothesis that topical application of Rosiglitazone, a Thiazolidinedione and ligand of peroxisome ...
Bühren, Jens   +8 more
core   +8 more sources

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