Results 301 to 310 of about 620,208 (350)

Retinal Layer Segmentation Reformulated as OCT Language Processing

2020
In the medical field, semantic segmentation has recently been dominated by deep-learning based image processing methods. Convolutional Neural Network approaches analyze image patches, draw complex features and latent representations and take advantage of these to label image pixels and voxels.
Arianne Tran, Jakob Weiss, Shadi Albarqouni, Shahrooz Faghi Roohi, Nassir Navab   +4 more
openaire   +1 more source

Adaptive feature squeeze network for nuclear cataract classification in AS-OCT image

Journal of Biomedical Informatics, 2022
Nuclear cataract (NC) is an age-related cataract disease. Cataract surgery is an effective method to improve the vision and life quality of NC patients. Anterior segment optical coherence tomography (AS-OCT) images are noninvasive, reproductive, and easy-measured, which can capture opacity clearly on the lens nucleus region.
Xiaoqing, Zhang, Zunjie, Xiao, Risa, Higashita, Yan, Hu, Wan, Chen, Jin, Yuan, Jiang, Liu   +6 more
openaire   +2 more sources

Anterior Segment Optical Coherence Tomography (AS-OCT)

2018
Anterior segment optical coherence tomography (AS-OCT) is a non-contact method analogous to ultrasound biomicroscopy (UBM) for the evaluation of the anterior segment structure with a higher resolution that uses infrared instead of ultrasound. In this chapter, we discuss the available types of AS-OCT. 1.
Hassan Hashemi, Kazem Amanzadeh, Fedra Hajizadeh   +2 more
openaire   +1 more source

Intraoperative Use of AS-OCT During Intrastromal Corneal Ring Segment Implantation

Ophthalmic Surgery, Lasers and Imaging Retina, 2012
BACKGROUND AND OBJECTIVE: To evaluate femtosecond laser-created tunnels intraoperatively by anterior segment optical coherence tomography (AS-OCT) during intrastromal corneal ring segment implantation. PATIENTS AND METHODS: The study prospectively examined 13 eyes of 11 patients who
Raciha Beril, Kucumen, Ebru, Gorgun, Nursal Melda, Yenerel, Canan Asli, Utine   +3 more
openaire   +2 more sources

Surrogate-Assisted Retinal OCT Image Classification Based on Convolutional Neural Networks

IEEE journal of biomedical and health informatics, 2019
Optical Coherence Tomography (OCT) is beco-ming one of the most important modalities for the noninvasive assessment of retinal eye diseases. As the number of acquired OCT volumes increases, automating the OCT image analysis is becoming increasingly ...
Yibiao Rong, Dehui Xiang, Weifang Zhu, Kai Yu, Fei Shi, Zhun Fan, Xinjian Chen   +6 more
semanticscholar   +1 more source

Repeatability of Epithelium Thickness Measured by an AS-OCT in Different Grades of Keratoconus and Compared to AS-OCT/Placido Topography

American Journal of Ophthalmology
To compare agreement of corneal epithelium thickness (ET) between AS-OCT system (RTVue, Optovue) and AS-OCT/Placido topographer (MS-39, CSO) in eyes with different stages of keratoconus (KC), and to assess the repeatability of RTVue AS-OCT.Prospective reliability analysis.KC eyes were classified into forme fruste KC (FFKC), mild, moderate, and severe ...
Yiran Wang, Rui Ning, Kexin Li, Huilin Xu, Yue Li, Yizhou Yang, Ingemar Gustafsson, Xingtao Zhou, Xiaomei Qu, Jinhai Huang   +9 more
openaire   +2 more sources

Spontaneous Deflation of an Iris Pigment Epithelial Cyst Documented with AS-OCT

Ophthalmic Surgery, Lasers and Imaging Retina, 2010
A 3-year-old girl presented with a black pupillary margin iris mass in the right eye diagnosed as an iris pigment epithelial (IPE) cyst, central (pupillary) type. The diagnosis was verified by anterior-segment optical coherence tomography (AS-OCT), which initially showed a circumscribed, round thin-walled cyst with clear lumen attached by a strand to ...
Christina, Kytasty, Britt J, Parvus, Zunair, Mahmood, Carol L, Shields, Jerry A, Shields   +4 more
openaire   +2 more sources

AS-OCT as a Rescue Tool During Difficult Lenticule Extraction in SMILE

Journal of Refractive Surgery, 2017
PURPOSE: To report a case of lenticule adherent to the anterior cap during small incision lenticule extraction (SMILE) and its subsequent management aided by anterior segment optical coherence tomography (AS-OCT). METHODS: Case report. RESULTS:
Jeewan S, Titiyal, Anubha, Rathi, Manpreet, Kaur, Ruchita, Falera   +3 more
openaire   +2 more sources

Multilevel CNN for Angle Closure Glaucoma Detection using AS-OCT Images

2020 International Conference on Systems, Signals and Image Processing (IWSSIP), 2020
Glaucoma is identified as one of the main global causes of visual impairment or blindness. There is no cure or possible corrections in case of visual impairment, so the early diagnosis is essential to delay or prevent its progression. However, the disease is asymptomatic in its early stages.
Marcos Melo Ferreira, Giovanna Pavani Esteve, Geraldo Braz Junior, Joao Dallyson Sousa de Almeida, Anselmo Cardoso de Paiva, Rodrigo Veras   +5 more
openaire   +1 more source

Anterior segment optical coherence tomography (AS-OCT) in strabismus following trauma

Journal of American Association for Pediatric Ophthalmology and Strabismus
We describe 3 cases of ocular trauma that presented with strabismus. Anterior segment optical coherence tomography was used to delineate the morphology of extraocular muscle insertions and proved helpful in diagnosis and management.
Savleen Kaur, Yasmin Bradfield, Vyshak AS, Kajree Gupta, Pankaj Gupta, Jaspreet Sukhija   +5 more
openaire   +2 more sources