نتایج جستجو برای: pentacam

تعداد نتایج: 460  

Journal: :International Journal of Imaging Systems and Technology 2022

Abstract Today, corneal refraction, height, and thickness data, which are required in the diagnosis of keratoconus, can be obtained with tomography devices. Pentacam four map display presenting this data is one most basic options keratoconus. In article, an artificial intelligence‐based method using images proposed to distinguish keratoconus from healthy eyes. Axial/sagittal curvature, back ele...

Journal: :Journal of cataract and refractive surgery 2006
Joseph B Ciolino Michael W Belin

PURPOSE To study the changes in posterior corneal elevation after laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) using Scheimpflug topography with the Pentacam anterior segment imaging system (Oculus, Inc.). SETTING Department of Ophthalmology, Albany Medical Center, and a private clinical practice, Albany, New York, USA. METHODS In this prospective study, 121 co...

2016
Ali Mirzajani Sattar Aghataheri Mohammad Ghoreishi Ebrahim Jafarzadepour Mohadese Mohammadinia

PURPOSE This study reports the characteristics of corneal higher order aberrations (HOAs) in eyes with normal topographic pattern using the Pentacam scheimpflug system. METHODS In this prospective, observational, comparative study, 165 eyes of 97 patients separated into five groups based on corneal topographic patterns were enrolled. All eyes received a comprehensive ophthalmologic examinatio...

Journal: : 2022

Keratoconus (KC) is a progressive non-inflammatory ectatic corneal disease typified by thinning and conical protrusion, as well irregular astigmatism with varying-degree visual impairment. A literature review on the epidemiology, classification diagnosis presented. Current clinical practice most commonly relies Krumeich’s adaptation of ABCD grading system M. Belin Amsler. The KC requires compre...

Journal: :International Journal of Power Electronics and Drive Systems 2023

<span lang="EN-US">The detection of keratoconus has been a difficult and arduous process over the years for ophthalmologists who have devised traditional approaches diagnosis including slit-lamp examination observation thinning corneal. The main contribution this paper is using deep learning models namely Resnet50 EfficientNet to not just detect whether an eye infected with or but also ac...

Background Keratoconus (KCN) is a bilateral, progressive, and non-inflammatory disorder in the cornea, which results in thinning and protrusion of the cornea. Objective This study aims to determine the effectiveness of using pachymetric progression indices (PPIs) in grading the severity of KCN disease.  Methods In this study, 76 patients with different stages of KCN were enrolled. The severit...

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