Results 31 to 40 of about 88,327 (313)
A comparison of two conjunctival rotation autograft techniques in primary pterygium surgery. [PDF]
, 2017 PURPOSE: To compare the effects of 90° and 180° conjunctival rotational autograft (CRA) techniques used in primary pterygium surgery. METHODS: Forty-five patients were included in this retrospective study. Visual acuity (VA), corneal topography, and auto-
Aksoy, Umit +7 more
core +2 more sources
Femtosecond astigmatic keratotomy for postkeratoplasty astigmatism
Saudi Journal of Ophthalmology, 2016 To evaluate the initial outcomes of femtosecond laser arcuate keratotomies (AK) to correct high astigmatism after keratoplasty.This retrospective non-comparative interventional study included 52 consecutive patients (52 eyes) who underwent Intralase-enabled arcuate keratotomies.
Mohanna Al Jindan +4 more
openaire +3 more sources
Optics Express, 2020 In this manuscript, the astigmatism of the waveguide combiner with a pair of symmetry HOEs was analyzed. The light field can be predicted by the modified convolution formulation of Fresnel diffraction when the information of light passes through the ...
W. Lin +3 more
semanticscholar +1 more source
Eye shape and retinal shape, and their relation to peripheral refraction [PDF]
, 2012 Purpose: We provide an account of the relationships between eye shape, retinal shape and peripheral refraction. Recent findings: We discuss how eye and retinal shapes may be described as conicoids, and we describe an axis and section reference system for
Atchison, David +4 more
core +2 more sources
Prevalence of and factors associated with astigmatism in preschool children in Wuxi City, China
BMC Ophthalmology, 2022 Purpose To investigate the status of astigmatism in preschool children in Wuxi City, and explore the risk factors related to astigmatism. The risk factors related to astigmatism development as predictors can help us identify preschool children who need ...
Zhihui Yang +6 more
doaj +1 more source
Effect of femtosecond laser-assisted steepest-meridian clear corneal incisions on preexisting corneal regular astigmatism at the time of cataract surgery [PDF]
International Journal of Ophthalmology, 2020 AIM: To investigate the clinical efficacy and safety of femtosecond laser-assisted steepest-meridian clear corneal incisions for correcting preexisting corneal astigmatism performed at the time of cataract surgery.
Wei Chen +7 more
doaj +1 more source
Journal of Ophthalmology, 2016 The aim of the study was to report postoperative corneal and surgically induced astigmatism (SIA) in patients with preoperative against-the-rule (ATR) astigmatism who underwent superior approach manual small incision cataract surgery (MSICS).
Edmund Arthur +6 more
doaj +1 more source
Observation of cone and rod photoreceptors in normal subjects and patients using a new generation adaptive optics scanning laser ophthalmoscope. [PDF]
, 2011 We demonstrate the capability of a new generation adaptive optics scanning laser ophthalmoscope (AOSLO) to resolve cones and rods in normal subjects, and confirm our findings by comparing cone and rod spacing with published histology measurements.
Duncan, Jacque L +3 more
core +3 more sources
Cochrane Database of Systematic Reviews, 2019 BACKGROUND Cataract is the leading cause of blindness in the world, and clinically significant astigmatism may affect up to approximately 20% of people undergoing cataract surgery.
J. Lake +5 more
semanticscholar +1 more source
Indian Journal of Ophthalmology, 2021 Purpose: The aim of this study was to evaluate the changes in astigmatism after unilateral recession of horizontal rectus muscles in pediatric patients.
Christina Karakosta +7 more
doaj +1 more source