Results 11 to 20 of about 38,555 (245)
BMC Ophthalmology, 2022 Background To assess the correlation between ocular residual astigmatism and anterior corneal astigmatism in children with low and moderate myopia. Methods Refractive astigmatism was determined by subjective manifest refraction.
Jian Lin +3 more
doaj +1 more source
Symmetrical femtosecond laser arc incision in correcting corneal astigmatism in cataract patients [PDF]
International Journal of Ophthalmology, 2023 AIM: To evaluate the effect of symmetrical arc incision correcting corneal astigmatism in femtosecond laser-assisted phacoemulsification (FLACS). METHODS: This study enrolled patients with cataract combined with regular corneal astigmatism of >0.75 D ...
Zun-Xia Hu +10 more
doaj +1 more source
Diagnostics, 2023 Purpose: To analyse the correspondence between refractive astigmatism and corneal astigmatism in pseudophakic eyes with non-toric intraocular lenses. Setting: Yeouido St. Mary hospital, Seoul, Republic of Korea.
Kyung-Sun Na +3 more
doaj +1 more source
Journal of Ophthalmology, 2021 Background: To date, particular emphasis is being put to correction of preoperative corneal astigmatism in phacoemulsification, since approximately 30% of the world’s population has astigmatism of at least 0.75D which results in decreased visual acuity ...
N. G. Zavgorodnia, V. Iu. Novikova
doaj +1 more source
Optics of astigmatism and retinal image quality [PDF]
, 2012 In the first part of this chapter, the optical condition of astigmatism is defined. The main causes and available classifications of ocular astigmatism are briefly described.
Arjona Carbonell, Mª Montserrat +5 more
core +2 more sources
Factors associated with corneal astigmatism change after ptosis surgery [PDF]
International 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
Scientific 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
BMC Ophthalmology, 2020 Background China has been undergoing dramatic economic development, accompanied by increased education load on the young children. This study is to investigate the prevalence, type, severity, and associated risk factors of astigmatism in school students ...
Jianyong Wang +7 more
doaj +1 more source
Comparison of corneal irregular astigmatism by the type of corneal regular astigmatism
Scientific Reports, 2021 We investigated the relation between corneal regular and irregular astigmatism in normal human eyes. In 951 eyes of 951 patients, corneal irregular astigmatism, such as asymmetry and higher-order irregularity components, was calculated using the Fourier ...
Yuta Ueno +5 more
doaj +1 more source
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.
Al Sabaani, Nasser +4 more
openaire +2 more sources