نتایج جستجو برای: retinal nerve fiber layer rnfl

تعداد نتایج: 618783  

2015
Shobha G Pai Madhurima K Nayak Shubashree Karat

Glaucoma is characterized by a combination of structural changes in the retina and optic nerve head and functional perimetric damage. Examination and documentation of the retinal nerve fiber layer are essential for the diagnosis and monitoring of glaucoma. Spectral domain Optical coherence tomography (OCT) is a high resolution imaging device capable of obtaining reproducible retinal nerve fiber...

2013
Andrea M. Schild Tina Ristau Julia Fricke Antje Neugebauer Bernd Kirchhof Srinivas R. Sadda Sandra Liakopoulos

PURPOSE To specify thickness values of various retinal layers on macular spectral domain Optical Coherence Tomography (SDOCT) scans in patients with autosomal dominant optic atrophy (ADOA) compared to healthy controls. METHODS SDOCT volume scans of 7 patients with ADOA (OPA-1 mutation) and 14 healthy controls were quantitatively analyzed using manual grading software. Mean thickness values fo...

2017
Ibrahim Kocak Hacı Koc Hakan Baybora Faruk Kaya Ali Aydın

This study aims to assess the effectiveness of ganglion cell-inner plexiform layer (GCIPL) measurements in preperimetric glaucoma (PPG) and primary open angle glaucoma (POAG). GCIPL and retinal nerve fiber layer (RNFL) thickness were measured in PPG, POAG, and control groups. The data obtained from these three groups were compared with analysis of variance and post hoc Tukey test. Average GCIPL...

2017
María Nieves-Moreno Jose M Martínez-de-la-Casa Pilar Cifuentes-Canorea Marina Sastre-Ibáñez Enrique Santos-Bueso Federico Sáenz-Francés Laura Morales-Fernández Julián García-Feijoó

PURPOSE Develop the first normative database of the thickness of every inner retinal layer in the macular area in a healthy, Caucasian population between 18 to 87 years old, using Spectralis Optical Coherence Tomography (OCT). METHODS On this transversal, observational study, 300 patients between 18 to 87 years old and without an ophthalmological condition were recruited. Macular OCT scans we...

2015
Ivania Pereira Stephanie Weber Stephan Holzer Georg Fischer Clemens Vass Hemma Resch

This work intends to assess circumpapillary retinal vessel density (RVD) at a 3.46 mm diameter circle and correlate it with circumpapillary retinal nerve fiber layer (RNFL) thickness measured with Fourier-Domain Optical Coherence Tomography. Furthermore, it aims to evaluate the reduction of intersubject variability of RNFL when considering RVD as a source of information for RNFL distribution. F...

2014
Elvan Yalcin Ozlem Balci

PURPOSE To evaluate whether there was a difference in peripapillary retinal nerve fiber layer (RNFL) and foveal thickness between amblyopic and normal individuals with optical coherence tomography. MATERIALS AND METHODS Sixty patients, 30 patients with hypermetropic anisometropic amblyopia and 30 normal emmetropic subjects, were enrolled in this study. The eyes of the participants were divide...

2016
Khushboo Srivastav Sandeep Saxena Abbas A. Mahdi Rajendra K. Shukla Carsten H. Meyer Levent Akduman Vinay K. Khanna

PURPOSE To study the correlation between serum levels of vitamin B12, folic acid, and homocysteine and the severity of diabetic retinopathy and the correlation with retinal nerve fiber layer (RNFL) thinning on spectral domain optical coherence tomography (SD-OCT). METHODS In a tertiary care center-based prospective cross-sectional study, 60 consecutive cases and 20 healthy controls in the age...

2016
Osman Sayın Volkan Yeter Nurşen Arıtürk

Aim. To compare the measurements of retinal nerve fiber layer (RNFL), macula and optic disc parameters obtained by optical coherence tomography (OCT), and intraocular pressure (IOP) between the patients with thyroid-associated ophthalmopathy (TAO) and healthy controls. Methods. One hundred and thirty-two eyes of 66 patients with TAO and 72 eyes of 36 healthy controls were included in the study....

Journal: :Investigative ophthalmology & visual science 2004
Eytan Z Blumenthal

PURPOSE To present a technique of ocular sectioning that enables continuous histologic measurements of peripapillary retinal nerve fiber layer (RNFL) thickness in a concentric ring around the optic disc, corresponding to similar regions measured by in vivo imaging techniques. METHODS Two pig eyes and two normal human eyes were processed using the "umbrella" technique, in which peripapillary c...

2015
Gökhan Pekel Semra Acer Nihal Cesur Ramazan Yağcı Ebru Nevin Çetin

OBJECTIVES To examine the late period retinal and choroidal alterations in the posterior pole of eyes that underwent primary suturing due to traumatic corneal perforation. MATERIALS AND METHODS This cross-sectional case series included 21 eyes of 21 patients. The fellow eyes served as the control group. Macular thickness, peripapillary retinal nerve fiber layer (RNFL) thickness, choroidal thi...

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