Results 1 to 10 of about 12,156 (169)
Contribution of Posterior Corneal Astigmatism to Total Corneal Astigmatism in a Sample of Egyptian Population [PDF]
Clinical Ophthalmology, 2020 Mohamed Hosny, Alaa Badawy, Lobna Khazbak, Mohamed Anis, Sarah Azzam Ophthalmology, Cairo University, Giza, EgyptCorrespondence: Mohamed HosnyOphthalmology, Cairo University, 84 Shehab Street, Mohandeseen, Giza 12411, EgyptTel +20 1000007675Email ...
Sarah Azzam, Mohamed Hosny, Mohamed Anis
exaly +7 more sources
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 +4 more sources
Age-Related Variations in Anterior, Posterior, and Total Corneal Astigmatism [PDF]
Clinical OphthalmologyThananop Pothikamjorn,1 Nuntachai Surawatsatien,2,3 Somtaporn Ueathaweephol,3 Thanapong Somkijrungroj2,3 1Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand; 2Center of ...
Pothikamjorn T +3 more
doaj +5 more sources
Studying the contribution of posterior corneal astigmatism to total corneal astigmatism
Journal of the Egyptian Ophthalmological Society, 2015 Settings The Faculty of Medicine, Alexandria University, Egypt. Purpose The aim of this work was to study the contribution of posterior corneal astigmatism to total corneal astigmatism.
Hany Ahmed Helaly
doaj +2 more sources
Frontiers in Medicine, 2021 Purpose: To evaluate the influence of analysis mode selection on prediction accuracy of corneal astigmatism using Pentacam.Methods: Fifty-nine eyes of 59 patients implanted with toric intraocular lenses (IOLs) were included in the retrospective study ...
Yating Tang, Wenwen He
exaly +3 more sources
Posterior Corneal Astigmatism: A Review Article
Clinical Optometry, 2019 Seyed-Farzad Mohammadi,1 Masoud Khorrami-Nejad,1,2 Moein Hamidirad21Translational Ophthalmology Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran; 2School of Rehabilitation, Shahid Beheshti University of Medical ...
Masoud Khorrami-Nejad +1 more
exaly +2 more sources
Journal of Optometry, 2018 Purpose: To evaluate the agreement between total corneal astigmatism calculated by vector summation of anterior and posterior corneal astigmatism (TCAVec) and total corneal astigmatism measured by ray tracing (TCARay).
Sepehr Feizi +3 more
doaj +3 more sources
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
Predicting Residual Astigmatism in Cataract Surgery
Vision, 2022 The purpose of this review is to evaluate the prediction of postoperative residual astigmatism and to determine the best prediction method for astigmatism correction.
Atsushi Kawahara
doaj +1 more source
The Relation between Corneal and Total Astigmatism [PDF]
Optometry and Vision Science, 1996 ABSTRACT Using computer‐assisted videokeratoscopy we measured corneal astigmatism and compared these results over a range of corneal zone diameters with total ocular astigmatism derived by subjective refraction. Videokeratoscopes permit a more detailed analysis of the power distribution within a given corneal surface area, enabling ...
Keller, Peter +4 more
openaire +2 more sources