نتایج جستجو برای: pentacam

تعداد نتایج: 460  

ژورنال: :مجله دانشکده پزشکی اصفهان 0
حسن رزمجو استاد، گروه چشم پزشکی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران شیرین فخری زاده پزشک عمومی، دانشکده ی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

مقدمه: این مطالعه جهت مقایسه ی مقادیر اندازه گیری شده ی ضخامت مرکز قرنیه با دستگاه های orbscan ii، ultrasound و pentacam در بیماران کاندیدای عمل photorefractive keratectomy (prk) انجام گرفت. روش ها: این مطالعه، یک مطالعه ی توصیفی- تحلیلی بود که در سال 1392 به مدت یک سال در بیمارستان فیض شهر اصفهان انجام شد. نمونه ی مورد بررسی، شامل 84 چشم از 84 بیمار که کاندیدای عمل prk بودند و سابقه ی عمل جراح...

دامن پاک, وحید, دوستدار, عسگر, قاسمی, محمد صادق, نصیری, نادر,

  Background : Posterior corneal elevation changes are keys to early diagnosis of corneal ectasia after keratorefractive surgery, so it is important to use an accurate method for measuring posterior corneal elevation. The purpose of this study is investigating posterior corneal elevation changes with Pentacam(HR) on patients underwent photorefractive keratectomy.   Methods: In this clinical tri...

Journal: :The Annals of African Surgery 2021

Background: Chronic angle-closure glaucoma (CACG) is a visually destructive disease. Effective management of CACG requires identifying eyes with narrow angle.
 Objective: To compare pentacam gonioscopy in detecting angles CACG.
 Method: We enrolled 101 glaucoma. Gonioscopy was performed on all eyes. Using Shaffer’s grading, subjects were classified into angle closure and open angle. A...

Journal: :Al-Azhar International Medical Journal (Print) 2022

Background; Central corneal thickness (CCT) measurements are important for determining intraocular pressure (IOP), examining endothelium activity, and assessing patients before after refractive surgery . Contact non-contact techniques can be used to assess CCT, Aim objectives: in individuals with healthy corneas, CCT values taken three distinct devices: noncontact specular microscope, anterior ...

2012
Bruno Machado Fontes Marcelo Palis Ventura Renato Ambrósio

Purpose: To assess the repeatability of central corneal thickness measurement at the geometrical center (Central Corneal Thickness CCT) given by the Pentacam High Resolution (HR) Comprehensive Eye Scanner (Oculus, Wetzlar, Germany) over time. Methods: Prospective, single center, observational study. Two separate CCT measurements were taken by the Pentacam corneal tomography exam (CTm) 3 to 12 m...

Journal: :International journal of ophthalmology 2013
Alireza Esmaeili Behzad Barazandeh Sina Ahmadi Alireza Haghi Seyed Mahdi Ahmadi Hosseini Fereshteh Abolbashari

AIM To evaluate the changes in the anterior segment parameters of the subjects with primary angle closure suspect (PACS) before and after laser iridotomy (LI) using the Pentacam and gonioscopy. METHODS Forty-eight eyes of 48 PACS were included. Anterior chamber angle (ACA), central anterior chamber depth (ACD), anterior chamber volume (ACV) and central corneal thickness (CCT) were recorded fr...

Journal: :Acta ophthalmologica 2009
Canan Asli Utine Feyza Altin Hanefi Cakir Irfan Perente

PURPOSE This study determined to assess the degree of agreement between anterior chamber depth (ACD) measurements obtained using three different devices and to analyse the relationship between ACD and spherical equivalent (SE) refraction. METHODS In this cross-sectional study, 42 eyes of 42 patients with a mean SE of - 4.69 +/- 4.61 D (range 0.00 D to - 14.88 D) were analysed. Measurements of...

2017
Dae-Young Park Dong Hui Lim Sungsoon Hwang Joo Hyun Tae-Young Chung

BACKGROUND To evaluate and compare the astigmatism prediction errors taken with the Pentacam measurements, Baylor nomogram, and Barrett formula for toric intraocular lens (IOL) implantation. METHODS Phacoemulsification with toric Precizon IOL implantation was performed in 41 eyes with corneal astigmatism (range, 1 to 5 diopters (D)) determined by IOLMaster and SimK on Pentacam. Preoperative c...

Journal: :Delhi Journal of Ophthalmology 2020

Journal: :Arquivos brasileiros de oftalmologia 2010
Vinícius Silbiger de Stefano Luiz Alberto Soares Melo Junior Felipe Mallmann Paulo Schor

PURPOSE Many systems try to replace Placido disc-based topographers, such as those based in Scheimpflug principles. The purpose of this study is to check if they are interchangeable. METHODS Quantitative analysis evaluated data obtained from EyeSys and Pentacam, i.e. simulated keratometric values, in addition to flattest and steepest keratometric values. Sixty-three maps from each device (Eye...

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