Results 101 to 110 of about 828,745 (178)

Corneal astigmatism analysis for toric intraocular lens implantation: precise measurements for perfect correction

, 2015
PURPOSE OF REVIEW: Corneal astigmatism is a common refractive error observed in a significant percentage of cataract patients. Accurate measurements of the preexisting corneal astigmatism are essential in order to achieve the desired refractive outcome ...
김태임, 이훈, 김응권
core   +1 more source

Correlation of the magnitude of astigmatism between posterior corneal surface and anterior corneal surface.

, 2016
A: high-myopia group (r = 0.235, p = 0.002), B: control group (r = 0.129, p = 0.115), C: anterior corneal surface with WTR astigmatism in the high-myopia group (r = 0.452, p = 0.000), D: anterior corneal surface with WTR astigmatism in the control group (
Yongxiang Jiang (330534), Yating Tang (784526), Dongjin Qian (3108339), Qinghe Jing (3108336), Yi Lu (6211)   +4 more
core   +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

A multicenter study of the distribution pattern of posterior corneal astigmatism in Chinese myopic patients having corneal refractive surgery. [PDF]

Sci Rep, 2020
Hu Y, Zhu S, Xiong L, Fang X, Liu J, Zhou J, Li F, Zhang Q, Huang N, Lei X, Jiang L, Wang Z.   +11 more
europepmc   +1 more source

A novel color-LED corneal topographer to assess astigmatism in pseudophakic eyes

, 2016
Tiago B Ferreira, Filomena J Ribeiro Department of Ophthalmology, Hospital da Luz, Lisbon, Portugal Purpose: To assess the accuracy of corneal astigmatism evaluation measured by four techniques, Orbscan IIz®, Lenstar LS900®, Cassini®, and ...
Ferreira TB, Ribeiro FJ
core  

Application of directional customized corneal relaxing incision in EVO ICL implantation: high myopia with low astigmatism

BMC Ophthalmology
Purpose To evaluate the efficacy of EVO-ICL implantation combined with a corneal relaxing incision for the correction of moderate to high myopia with low astigmatism. Design Prospective non-randomized clinical trial.
Guanghan Xu, Mingrui Cheng, Qingyang Liu, Mingwei Li, Shumin Tang, Boliang Li, Yinjie Jiang, Yadi Lei, I-Chun Lin, Zhiwei Mao, Xun Chen, Xiaoying Wang   +11 more
doaj   +1 more source

Anterior corneal measurement estimations of total corneal astigmatism by steepness of corneal meridian.

, 2016
Anterior corneal measurement estimations of total corneal astigmatism by steepness of corneal meridian.
Yongxiang Jiang (330534), Yating Tang (784526), Dongjin Qian (3108339), Qinghe Jing (3108336), Yi Lu (6211)   +4 more
core   +1 more source

Assessment of corneal astigmatism following frown and straight incision forms in sutureless manual small incision cataract surgery

, 2016
Angela Ofeibea Amedo, Kwadwo Amoah, Nana Yaa Koomson, David Ben Kumah, Eugene Appenteng Osae Department of Optometry and Visual Science, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana Abstract: To investigate which of two tunnel ...
Amoah K, Osae EA, Amedo AO, Kumah DB, Koomson NY   +4 more
core  

Birefringent properties of the human cornea in vivo : towards a new model of corneal structure [PDF]

The fundamental corneal properties of mechanical rigidity, maintenance of curvature and optical transparency result from the specific organisation of collagen fibrils in the corneal stroma. The exact arrangement of stromal collagen is currently unknown
Misson, Gary P.
core  

IOL Power Calculation After Laser-Based Refractive Surgery: Measured vs. Predicted Posterior Corneal Astigmatism Using the Barrett True-K Formula. [PDF]

J Clin Med
De Rosa G, Criscuolo D, Longo L, Allegrini D, Romano MR.   +4 more
europepmc   +1 more source