Results 21 to 30 of about 38,555 (245)
Effect of the posterior corneal surface on total corneal astigmatism in patients with age-related cataract [PDF]
International Journal of Ophthalmology, 2018 AIM: To explore the effect of the posterior astigmatism on total corneal astigmatism and evaluate the error caused by substituting the corneal astigmatism of the simulated keratometriy (simulated K) for the total corneal astigmatism in age-related ...
Ying-Ying Jin +4 more
doaj +1 more source
Posterior Corneal Characteristics of Cataract Patients with High Myopia.
PLoS ONE, 2016 PurposeTo evaluate the characteristics of the posterior corneal surface in patients with high myopia before cataract surgery.MethodsWe performed a cross-sectional study at the Eye and ENT Hospital of Fudan University, Shanghai, China. Corneal astigmatism
Qinghe Jing +4 more
doaj +1 more source
BMC Ophthalmology, 2020 Background To elucidate whether eyelid squinting improves near and distance vision in against-the-rule (ATR) and with-the-rule (WTR) simple myopic astigmatism in pseudophakic eyes. Methods A refraction-model eye was mounted on a wavefront analyzer.
Jay Won Rhim +5 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
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
Visual acuity measures do not reliably detect childhood refractive error--an epidemiological study. [PDF]
, 2012 PURPOSE: To investigate the utility of uncorrected visual acuity measures in screening for refractive error in white school children aged 6-7-years and 12-13-years.
Nicola S Logan +19 more
core +1 more source
The contribution of ocular residual astigmatism to anterior corneal astigmatism in refractive astigmatism eyes [PDF]
Scientific Reports, 2021 AbstractTo determine the distribution of ocular residual astigmatism (ORA) in astigmatic eyes and the influence on the anterior corneal (ACA) and refractive astigmatism (RA). A total of 165 children met the inclusion criteria. Right eyes’ data were analyzed. Using Thibos vector analysis to calculate ORA. Spearman correlation analysis was used to obtain
openaire +3 more sources