Results 211 to 220 of about 16,042 (270)

Repeatability and agreement between a reference Scheimpflug tomographer and a low‐cost Scheimpflug system

Journal of Cataract & Refractive Surgery, 2023
To assess the repeatability and agreement between Scheimpflug-based corneal topographer, Scansys and Pentacam, in measuring ocular parameters in myopic eyes.
Wenjun Xu, C. Zhai, Mayinuer Yusufu, J. Gan, Shiming Li, Yan-zhen Zheng, M. Kang   +6 more
semanticscholar   +3 more sources

Calibration and rectification of bi-telecentric lenses in Scheimpflug condition

Optics and Lasers in Engineering, 2022
In the lens-based imaging model, the Scheimpflug principle is expressed as the object plane, the image plane, and the lens plane intersect in a line.
Yan Hu, zhongwei liang, Shijie Feng
exaly   +2 more sources

Clinical applications of Scheimpflug imaging

Expert Review of Ophthalmology, 2009
Since the Scheimpflug principle was first described more than a century ago, there has been great interest among ophthalmologists in the use of Scheimpflug cameras in anterior-segment imaging. Scheimpflug cameras have advanced significantly and modern-day instruments provide comprehensive imaging and topographic data of the anterior segment.
Dilraj S Grewal
exaly   +2 more sources

Evaluation of artificial intelligence models for the detection of asymmetric keratoconus eyes using Scheimpflug tomography

Clinical and Experimental Ophthalmology, 2022
To evaluate artificial intelligence (AI) models based on objective indices and raw corneal data from the Scheimpflug Pentacam HR system (OCULUS Optikgeräte GmbH, Wetzlar, Germany) for the detection of clinically unaffected eyes in patients with ...
Zhe Xu, Ruiwei Feng, Xiuming Jin, Heping Hu, S. Ni, Wen Xu, Xiangshang Zheng, Jian Wu, K. Yao   +8 more
semanticscholar   +1 more source

Prevalence of keratoconus based on Scheimpflug imaging: The Raine Study.

Ophthalmology (Rochester, Minn.), 2020
PURPOSE To describe the prevalence and systemic associations of keratoconus in young adults in Perth, Western Australia. DESIGN Cross-sectional study PARTICIPANTS: 1,259 participants, aged 20 years old METHODS: The Raine Study is a multi-generational ...
Elsie Chan, E. Chong, G. Lingham, Louis J. Stevenson, P. Sanfilippo, A. Hewitt, D. Mackey, S. Yazar   +7 more
semanticscholar   +1 more source

Accurate and flexible calibration method for a 3D microscopic structured light system with telecentric imaging and Scheimpflug projection.

Optics Express, 2022
3D imaging and metrology of complex micro-structures is a critical task for precision manufacturing and inspection. In this paper, an accurate and flexible calibration method for 3D microscopic structured light system with telecentric imaging and ...
Hui-xing Deng, Pengyu Hu, Guofeng Zhang, Chengsheng Xia, Yindi Cai, Shuming Yang   +5 more
semanticscholar   +1 more source

Optimized CorT Total to compare Scheimpflug vs dual Scheimpflug/Placido imaging devices

Journal of Cataract & Refractive Surgery, 2021
Purpose: To compare the manufacturer-provided measures of total corneal power (TCP) generated by Scheimpflug and dual Scheimpflug/Placido imaging compared with corneal topographic astigmatism calculated on the basis of measured TCP data (CorT Total).
Tanner J, Ferguson, Andre L, Piccinini, Praneetha, Thulasi, James K Y, Ong, George, Stamatelatos, Noel, Alpins, J Bradley, Randleman   +6 more
openaire   +2 more sources

THE EXFOLIATION IN THE SCHEIMPFLUG PHOTOGRAPHY

Acta Ophthalmologica, 1988
Abstract. Scheimpflug photography is a very useful method in the diagnosis of exfoliation. It helps to differentiate between tiny subcapsular opacifications and supracapsular appositions. It is a valuable aid in the detection of early stages of exfoliation still unvisible at ordinary slit lamp examination.
G J, Goder, R G, Rechlin
openaire   +2 more sources

Topographic, elevation, and keratoconus indices for diagnosis of keratoconus by a combined Placido and Scheimpflug topography system

European Journal of Ophthalmology, 2021
Purpose: To determine the accuracy of various corneal parameters in keratoconus diagnosis using Scheimpflug camera combined with Placido disk corneal topography (Sirius, CSO).
H. Gharieb, I. Othman, A. H. Oreaba, Mona Kamal Abdelatif   +3 more
semanticscholar   +1 more source

Agreement between swept-source optical biometry and Scheimpflug-based topography measurements of posterior corneal curvature

Journal of cataract and refractive surgery, 2021
Agreement of posterior corneal curvature measurements between swept-source optical biometry and Scheimpflug-based topography was evaluated. Purpose: To evaluate agreement of posterior corneal curvature parameters between a swept-source optical coherence ...
B. Kose
semanticscholar   +1 more source