Results 101 to 110 of about 13,852 (253)

Refractive errors in 3-6 year-old Chinese children: a very low prevalence of myopia?

open access: yes, 2015
PURPOSE To examine the prevalence of refractive errors in children aged 3-6 years in China. METHODS Children were recruited for a trial of a home-based amblyopia screening kit in Guangzhou preschools, during which cycloplegic refractions were measured in
Lan, Weizhong   +6 more
core   +1 more source

Effect of pupil size on corneal aberrations before and after standard, custom LASIK and corneal refractive therapy [PDF]

open access: yes, 2010
PURPOSE: To evaluate the effect of changing the pupil size on the corneal first surface higher order aberrations induced by different refractive treatments (standard LASIK; custom LASIK and corneal refractive therapy).
González-Méijome, José Manuel   +4 more
core   +1 more source

Clinical outcomes of wavefront-guided laser in situ keratomileusis to treat moderate-to-high astigmatism

open access: yesClinical Ophthalmology, 2015
Steven C Schallhorn,1,2 Jan A Venter,2 Stephen J Hannan,2 Keith A Hettinger2 1University of California, San Francisco, CA, USA; 2Optical Express, Glasgow, UK Purpose: The purpose of this study was to evaluate the refractive and visual outcomes of ...
Schallhorn SC   +3 more
doaj  

The comparison of visual outcomes, aberrations, and Bowman’s layer micro-distortions after femtosecond laser small-incision lenticule extraction (SMILE) for the correction of high and moderate myopia and myopic astigmatism

open access: yesBMC Ophthalmology, 2019
Background This study compares the clinical outcomes of femtosecond laser small-incision lenticule extraction (SMILE) for the correction of myopia and myopic astigmatism greater than − 10 D, and − 10 D or less respectively.
Bing Qin   +4 more
doaj   +1 more source

Resultados a longo prazo de ceratectomia fotorefrativa para miopia e astigmatismo miópico [PDF]

open access: yes, 2007
PURPOSE: To assess the long-term refractive outcomes of photorefractive keratectomy in myopia and myopic astigmatism. METHODS: A retrospective study of 120 photorefractive keratectomy operated eyes with at least four-year follow-up (maximum of 96 months,
Bottós, Juliana Mantovani   +4 more
core   +3 more sources

A multicenter study of the distribution pattern of posterior corneal astigmatism in Chinese myopic patients having corneal refractive surgery [PDF]

open access: gold, 2020
Yijun Hu   +11 more
openalex   +1 more source

Prevalence of refractive conditions in the general population attending eye care clinics in the north of Portugal [PDF]

open access: yes, 2009
The purpose of this study was to report the fi rst estimations on the prevalence of refractive conditions in a Portuguese population attending several ophthalmologic and optometric clinics within the same region.
Cerviño, Alejandro   +6 more
core  

[Myopia and Myopic Astigmatism in school-children].

open access: yesAndes pediatrica : revista Chilena de pediatria, 2022
Worldwide, there is an epidemic increase in myopia. In children, the evidence points to a lack of ex posure to natural light. In Chile, the population situation of myopia in children is unknown. Objec tive: To estimate the tendency of myopia and myopic astigmatism in 1st- and 6th-grade students from the public education system in Chile.Ecological study
Magdalena, Bastías G   +3 more
openaire   +1 more source

Home - About - Disclaimer - Privacy