Results 31 to 40 of about 828,745 (178)

Age-Related Variations in Anterior, Posterior, and Total Corneal Astigmatism

Clinical Ophthalmology
Thananop 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, Surawatsatien N, Ueathaweephol S, Somkijrungroj T   +3 more
doaj   +4 more sources

Refraction changes in the anterior and posterior corneal surfaces during the early postoperative period following sinus trabeculectomy [PDF]

Клиническая офтальмология, 2023
V.V. Averich, A.V. Volzhanin, G.B. Egorova Krasnov Research Institute of Eye Diseases, Moscow, Russian Federation Aim: to evaluate keratotopography of the anterior and posterior corneal surfaces in the early postoperative period following ...
V.V. Averich, A.V. Volzhanin, G.B. Egorova   +2 more
doaj  

Posterior Corneal Astigmatism [PDF]

, 2022
In order to calculate an appropriate intraocular lens (IOL) power for an eye undergoing cataract surgery, the most important measurements are the axial length of the eye and corneal shape.
LaHood, Benjamin Richard
core  

Repeatability and comparability of the Galilei-G4 and Cassini in measuring corneal power and astigmatism in normal and post-refractive surgery eyes

Scientific Reports, 2021
To assess the repeatability and comparability of the Galilei G4 versus the Cassini topographer in post-refractive eyes and in normal eyes, including older patients representative of an initial cataract evaluation.
Mohamed Mohamed, Mahmood Khan, Amritha Kanakamedala, Isha Gupta, Li Wang, Douglas Koch, Zaina Al-Mohtaseb   +6 more
doaj   +1 more source

Effects of steep-axis incision on corneal curvature in one-handed phacoemulsification [PDF]

International Journal of Ophthalmology, 2019
AIM: To examine the effects of one-handed phacoemulsification with steep-axis incision on corneal curvature and analyze surgically induced astigmatism (SIA) on the true net power, anterior and posterior corneal surfaces. METHODS: Patients with cataracts
Pan-Pan Li, Ye-Meng Huang, Qi Cai, Li-Li Huang, Yu Song, Huai-Jin Guan   +5 more
doaj   +1 more source

Calculating the Power of Toric Intraocular Lens using Total Corneal Astigmatism Measured by a Swept-Source Optical Coherence Tomography-Based Device: An Observation which Changed our Practice Pattern

Delhi Journal of Ophthalmology, 2023
Toric intraocular lenses (IOLs) have been a game-changer for addressing patients with cataract and significant preexisting corneal astigmatism. With increasing demands and expectations of the patients, there is now a greater responsibility on part of ...
Sanjay Chaudhary, Alka Pandey, Anju Sharma, Rahil Chaudhary, Hema Mehra, Nishtha Khurana, Divya Vermani, Ritu Nagpal   +7 more
doaj   +1 more source

Comparison of Automated Keratometer and Scheimpflug Tomography for Predicting Refractive Astigmatism in Pseudophakic Eyes

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, Giacomo Savini, Woong-Joo Whang, Kristian Næser   +3 more
doaj   +1 more source

Characteristics of corneal high-order aberrations in adolescents with mild to moderate myopia

BMC Ophthalmology, 2020
Background This study investigated the characteristics of corneal higher-order aberrations (HOAs) of the anterior surface, posterior surface, and total cornea in adolescents with mild to moderate myopia.
Xu Zhang, Jin-Hui Ma, Xin Xi, Lin Guan
doaj   +1 more source

Evaluation of interface quality in organ-cultured lamellar corneal transplants [PDF]

, 2012
Background: With increasing numbers of lamellar keratoplasties, eye banks are challenged to deliver precut lamellar donor tissue. In Europe, the most common technique of corneal storage is organ culture which requires a deswelling process before surgical
Kohnen, Thomas, Wolf, Armin, Kook, Daniel, Grüterich, Martin, Jagow, Burkhard von, Kampik, Anselm, Lackerbauer, Carlo A., Messmer, Elisabeth M.   +7 more
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A multicenter study of interocular symmetry of corneal biometrics in Chinese myopic patients

Scientific Reports, 2021
It is essential to know the normal range of the interocular symmetry of the cornea (ISC) for keratoconus diagnosis and corneal substitutes design. In the present study we investigated the interocular symmetry of corneal biometrics in 6,644 Chinese myopic
Guihua Xu, Yijun Hu, Shanqing Zhu, Yunxiang Guo, Lu Xiong, Xuejun Fang, Jia Liu, Qingsong Zhang, Na Huang, Jin Zhou, Fangfang Li, Xiaohua Lei, Li Jiang, Zheng Wang   +13 more
doaj   +1 more source