Results 101 to 110 of about 365,280 (180)

Aligning the Axis of Toric Intraocular Lens with the Corneal Steep Meridian by Setting SIA at 0 Diopter: A Prospective Randomized Controlled Trial [PDF]

Fanqian Song, Jin Xie, Yusu Peng, Honglei Li, Yunhai Dai Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, People’s Republic of ChinaCorrespondence: Yunhai Dai, Eye Institute of ...
Peng Y, Li H, Xie J, Song F, Dai Y
core  

Age Differences in Axial Length, Corneal Curvature, and Corneal Astigmatism in Marfan Syndrome with Ectopia Lentis

, 2018
Purpose. To investigate the differences in axial length, corneal curvature, and corneal astigmatism with age in patients with Marfan syndrome (MFS) and ectopia lentis. Methods. A retrospective case series study was conducted.
Dongjin Qian, Jiahui Chen, Yongxiang Jiang, Qinghe Jing, Yating Tang, Yi Lu   +5 more
core   +1 more source

The effect of corneal power on the accuracy of 14 IOL power formulas

BMC Ophthalmology
Background This study evaluates the impact of corneal power on the accuracy of 14 newer intraocular lens (IOL) calculation formulas in cataract surgery.
Jialin Xu, Lu Zhang, Er Mo, Kaiyi Zhu, Yitong Zhu, Ke Feng, Zunting Wu, Yangran Zheng, Fang Huang, Xianhui Gong, Jin Li   +10 more
doaj   +1 more source

Adjustment of anterior corneal astigmatism values to incorporate the likely effect of posterior corneal curvature for toric IOL calculation

, 2015
PURPOSE: To establish if average refractive overcorrection or undercorrection of corneal astigmatism based on the "rule" of the astigmatism occurs if toric intraocular lenses (IOLs) are calculated on the basis of anterior corneal measurements, and to ...
van Zyl, Lourens, Lourens van Zyl, Esterman, A., Esterman, Adrian, Goggin, M., Adrian Esterman, van Zyl, L., Michael Goggin, Zamora-Alejo, Katherine, Zamora-Alejo, K., Goggin, Michael, Katherine Zamora-Alejo   +11 more
core   +1 more source

Age-related changes in corneal parameters in the Turkish population: a Pentacam-based study

BMC Ophthalmology
Purpose To evaluate anterior and posterior corneal surfaces and anterior segment parameters in the Turkish population using Pentacam, and to analyze age-related changes.
Denizcan Özizmirliler, İsmet Durak
doaj   +1 more source

Comparison of Anterior Segment Parameters and Axial Length Using Two Scheimpflug Devices with Integrated Optical Biometers

Clinical Ophthalmology, 2020
Chantaka Supiyaphun,1 Sasivimol Rattanasiri,2 Passara Jongkhajornpong3 1Department of Ophthalmology, Faculty of Medicine, Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand; 2Department of Clinical Epidemiology and Biostatistics, Faculty of ...
Supiyaphun C, Rattanasiri S, Jongkhajornpong P   +2 more
doaj  

Corneal Curvature Change After Strabismus Surgery: An Experience from a Single-academic Center

Siriraj Medical Journal
Objective: This study aimed to explore corneal curvature changes following strabismus surgery using a quadric surface fitting model to address ocular misalignment. Material and Methods: In this prospective cross-sectional study, 54 completed cases (84
Thammanoon Surachatkumtonekul, Sasima Tongsai, Kanchalika Sathianvichitr, Prapasson Sangsre, Manatsawin Saiman, Wasawat Sermsripong, Piyaphat Jaruniphakul   +6 more
doaj  

The inter-relationship of corneal thickness and shape changes

, 1972
The relationship between corneal thickness and corneal curvature changes was investigated by modifying the chemical environment of the cornea by the wearing of different types of contact lenses.
Bailey, Ian L., Carney, Leo G.
core  

Diurnal variations of corneal topography and thickness [PDF]

, 1982
Measurements of central and peripheral corneal thickness, corneal topography, and central corneal curvature were made for 21 subjects at hourly intervals for 12 hr of 1 day for each subject.
Smith, George, Carney, Leo G., Kiely, Patricia M.   +2 more
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CORRELATION BETWEEN CORNEAL CURVATURE AND REFRACTIVE ERROR

, 1986
각막은 정상안 및 굴절이상안에 있어서 시력결정의 주요인이 되기 때문에 각막의 만곡도에 대한 정확한 측정과 각 개인별 차이에 대한 인식의 필요성이 점증하고 있다. 이에 저자는 1984년 9월 1일부터 1985년 2월 28일까지 이화여자대학교 부속병원 안과에 내원한 굴절 이상자 중 근시안에 있어서 각막 만곡도의 평균치를 구하고 굴절이상과의 상관관계를 연구하여 다음과 같은 결론을 얻었다. 1.
최규룡
core   +1 more source