Results 21 to 30 of about 60,803 (278)

Early Astigmatism Can Alter Myopia Development in Chickens

open access: yesInvestigative Ophthalmology and Visual Science, 2021
Purpose To determine the effects of optically imposed astigmatism on myopia development in chickens. Methods Chicks were randomly assigned to wear either spherical (−10D, “LIM”, n = 14) or sphero-cylindrical lenses (n ≥ 19 in each group) monocularly for ...
S. Vyas, C. Kee
semanticscholar   +1 more source

Factors associated with corneal astigmatism change after ptosis surgery [PDF]

open access: yesInternational Journal of Ophthalmology, 2022
AIM: To evaluate the predictive factors of postoperative corneal astigmatism change in ptosis patients who underwent ptosis surgical repair. METHODS: Patients who underwent levator resection at Oculoplastic service of the Department of Ophthalmology ...
Natpatsorn Mongkolareepong   +2 more
doaj   +1 more source

Type of residual astigmatism and uncorrected visual acuity in pseudophakic eyes

open access: yesScientific Reports, 2022
It is difficult to assess the pure impact of the type of residual astigmatism (with-the-rule; WTR, against-the-rule; ATR, and oblique astigmatism) on uncorrected distance visual acuity (UDVA) in pseudophakic eyes due to different age distribution of ...
Yumi Hasegawa   +3 more
doaj   +1 more source

Effect of the posterior corneal surface on total corneal astigmatism in patients with age-related cataract [PDF]

open access: yesInternational 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

Eyelid squinting improves near vision in against-the-rule and distance vision in with-the-rule astigmatism in pseudophakic eyes: an eye model experimental study

open access: yesBMC 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

Impact of Thermal Pulsation Treatment on Astigmatism Management and Outcomes in Meibomian Gland Dysfunction Patients Undergoing Cataract Surgery

open access: yesClinical Ophthalmology, 2020
Purpose This study aimed to assess the effects of thermal pulsation system (TPS) treatment on astigmatism management in meibomian gland dysfunction (MGD) patients undergoing cataract surgery.
C. Matossian
semanticscholar   +1 more source

Postoperative Corneal and Surgically Induced Astigmatism following Superior Approach Manual Small Incision Cataract Surgery in Patients with Preoperative Against-the-Rule Astigmatism

open access: yesJournal 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]

open access: yesInternational 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

Changes in astigmatism after horizontal muscle recession strabismus surgery: A retrospective cohort study

open access: yesIndian 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

Prevalence and Age-Related Changes of Corneal Astigmatism in Patients Undergoing Cataract Surgery in Northern China

open access: yesJournal of Ophthalmology, 2020
Purpose To examine the magnitude, orientation, and age-related changes of corneal astigmatism of the eyes before cataract surgery. Setting. Hebei Eye Hospital, Hebei, China. Design A clinical-based retrospective study. Results The study consisted of 5662
Zhizhong Wu, Caijuan Liu, Zhimin Chen
semanticscholar   +1 more source

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