Results 1 to 10 of about 16,042 (270)

Incidence and prevalence of keratoconus based on Scheimpflug imaging.

Ophthalmology, 2022
The prevalence of keratoconus (Belin/Ambrόsio Enhanced Ectasia Display Score ≥2.6 on Scheimpflug imaging) in a longitudinal, community cohort study from Western Australia was 3.4% (n=26/755). Keratoconus incidence over an 8-year period was 2.2% (n=15/669)
Elsie Chan, E. Chong, S. Lee, M. Franchina, S. Yazar, P. Eastwood, N. McArdle, D. Mackey, G. Lingham   +8 more
semanticscholar   +6 more sources

Scheimpflug Camera-Based Technique for Multi-Point Displacement Monitoring of Bridges

Sensors, 2022
Owing to the limited field of view (FOV) and depth of field (DOF) of a conventional camera, it is quite difficult to employ a single conventional camera to simultaneously measure high-precision displacements at many points on a bridge of dozens or ...
Lei Xing, Wujiao Dai, Yunsheng Zhang
doaj   +2 more sources

Repeatability of OCT-Based versus Scheimpflug- and Reflection-Based Keratometry in Patients with Hyperosmolar and Normal Tear Film

Clinical Ophthalmology, 2020
Bjørn Gjerdrum,1,2 Kjell Gunnar Gundersen,2 Per Olof Lundmark,1 Bente Monica Aakre1 1Department of Optometry, Radiography and Lighting Design, University of South-Eastern Norway, Kongsberg, Norway; 2Ifocus Eye Clinic, Haugesund ...
Gjerdrum B, Gundersen KG, Lundmark PO, Aakre BM   +3 more
doaj   +2 more sources

The precision and agreement of corneal thickness and keratometry measurements with SS-OCT versus Scheimpflug imaging

Eye and Vision, 2020
Purpose To assess the repeatability and reproducibility of swept-source optical coherence tomography (SS-OCT) and Scheimpflug system and evaluate the agreement between the two systems in measuring multiple corneal regions in children. Methods Pachymetric
Yune Zhao, Ding Chen, Giacomo Savini, Qing Wang, Hongfang Zhang, Yili Jin, Benhao Song, Rui Ning, Jinhai Huang, Chenyang Mei   +9 more
doaj   +2 more sources

Comparison of Scheimpflug tomography, Placido disc, and combined Placido Scheimpflug in the measurement of pupil offset in myopic population

Frontiers in Medicine
IntroductionThis study aimed to compare the consistency of pupil offset measurements obtained using the Pentacam, Keratron Scout, and Sirius devices.MethodsThis retrospective cross-sectional study included 146 young myopic individuals (292 eyes) scheduled for refractive surgery at Dalian Third People’s Hospital between January 2023 and December 2023 ...
Jiliang Ning, Jiliang Ning, Jiliang Ning, Jiliang Ning, Lijun Zhang, Lijun Zhang, Lijun Zhang, Lijun Zhang   +7 more
exaly   +4 more sources

Optimized artificial intelligence for enhanced ectasia detection using Scheimpflug-based corneal tomography and biomechanical data.

American journal of ophthalmology-glaucoma, 2022
PURPOSE To optimize artificial intelligence (AI) algorithms to integrate Scheimpflug-based corneal tomography and biomechanics to enhance ectasia detection. DESIGN Multicenter cross-sectional case-control retrospective study. METHODS 3,886 unoperated
Renato Ambrósio, A. Machado, Edileuza Leão, J. M. Lyra, Marcella Q. Salomão, L. Esporcatte, J. B. D. R. Filho, Erica Ferreira-Meneses, Nelson Sena, J. Haddad, A. Neto, Gildasio Castelo de Almeida, C. Roberts, Ahmed Elsheikh, R. Vinciguerra, P. Vinciguerra, J. Bühren, T. Kohnen, G. Kezirian, F. Hafezi, Nikki L. Hafezi, E. Torres-Netto, N. Lu, D. Kang, O. Kermani, S. Koh, P. Padmanabhan, S. Taneri, W. Trattler, L. Gualdi, J. Salgado‐Borges, F. Faria-Correia, E. Flockerzi, B. Seitz, V. Jhanji, T. C. Chan, P. Baptista, D. Reinstein, T. Archer, K. Rocha, G. Waring, R. Krueger, W. Dupps, R. Khoramnia, H. Hashemi, S. Asgari, H. Momeni-Moghaddam, S. Zarei-Ghanavati, R. Shetty, P. Khamar, M. Belin, Bernardo T. Lopes   +51 more
semanticscholar   +1 more source

Combinations of Scheimpflug tomography, ocular coherence tomography and air-puff tonometry improve the detection of keratoconus.

Contact lens & anterior eye : the journal of the British Contact Lens Association, 2023
PURPOSE To determine whether combinations of devices with different measuring principles, supported by artificial intelligence (AI), can improve the diagnosis of keratoconus (KC).
N. Lu, C. Koppen, F. Hafezi, S. Ní Dhubhghaill, I. Aslanides, Qin-mei Wang, Le-Le Cui, J. Rozema   +7 more
semanticscholar   +1 more source

Laser triangulation measurement system with Scheimpflug calibration based on the Monte Carlo optimization strategy.

Optics Express, 2022
We propose a linear laser triangulation measurement system using Scheimpflug calibration based on the Monte Carlo optimization strategy. A Scheimpflug inclination camera calibration model is introduced in the measurement system for improving the image ...
Ruiming Chen, Yiming Li, Gaopeng Xue, Yihao Tao, Li Xinghui   +4 more
semanticscholar   +1 more source

Revisiting Pentacam Parameters in the Diagnosis of Subclinical and Mild Keratoconus Based on Different Grading System Definitions

Türk Oftalmoloji Dergisi, 2023
Objectives: To retest the performance of Pentacam parameters in the detection of eyes with subclinical keratoconus (KC) and mild KC based on different definitions from the Amsler-Krumeich (AK), Collaborative Longitudinal Evaluation of Keratoconus (CLEK),
İbrahim Toprak, Çiğdem Martin, Celal Emre Güneş, Jorge Alio   +3 more
doaj   +1 more source

Pix2pix Conditional Generative Adversarial Networks for Scheimpflug Camera Color-Coded Corneal Tomography Image Generation

Translational Vision Science & Technology, 2021
Purpose To assess the ability of pix2pix conditional generative adversarial network (pix2pix cGAN) to create plausible synthesized Scheimpflug camera color-coded corneal tomography images based upon a modest-sized original dataset to be used for image ...
Hazem Abdelmotaal, Ahmed Abdou, Ahmed Omar, D. El-Sebaity, Khaled Abdelazeem   +4 more
semanticscholar   +1 more source