نتایج جستجو برای: optic coherence tomography

تعداد نتایج: 277875  

2017
Elena Avram

Introduction: For many years, amblyopia was regarded as a disorder of the visual system in which an organic cause could not be identified. Optical Coherence Tomography opens new horizons in understanding the etiopathology of amblyopia and seems to highlight morphologic anomalies in the retina of the amblyopic eye. Purpose: The objective of this paper is to analyze the macular thickness, optic n...

شیرعلی, امیر, حسینی نسب, عاطفه, سلطان سنجری, مصطفی, مقدسی, مهدی,

  Background : Early diagnosis of multiple sclerosis disability is very important in managing patients. The aim of this study is to use Heidelberg Retinal Tomography (HRT) to evaluate the Retinal Nerve Fiber Layer (RNFL) of MS patient as a predictor factor of their disability scales.   Methods : In this cross-sectional study a total of 69 patients with RR.MS were included on the revised McDonal...

2012
Eduardo B. Rodrigues Margara Johanson Fernando M. Penha

Optical coherence tomography (OCT) is an optical acquisition method to examine biological tissues. In recent years, OCT has become an important imaging technology used in diagnosing and following macular pathologies. Further development enabled application of optical coherence tomography in evaluation of the integrity of the nerve fiber layer, optic nerve cupping, anterior chamber angle, or cor...

2017
Mine Yildirim Deniz Kilic Mehmet Emin Dursun Birgul Dursun

In this report, we present a case of diabetic papillopathy that resolved after a single dose of intravitreal ranibizumab injection. A 50-year-old male presented with painless visual loss in his right eye. His visual acuity was 1/10 in the right eye and 10/10 in the left eye. Anterior segment examination of both eyes was unremarkable. Posterior segment of the right eye showed nonproliferative di...

Journal: :Optics letters 2005
Tuqiang Xie David Mukai Shuguang Guo Matthew Brenner Zhongping Chen

A fiber-optic-bundle-based optical coherence tomography (OCT) probe method is presented. The experimental results demonstrate this multimode optical fiber-bundle-based OCT system can achieve a lateral resolution of 12 microm and an axial resolution of 10 microm with a superluminescent diode source. This novel OCT imaging approach eliminates any moving parts in the probe and has a primary advant...

Journal: :Arquivos brasileiros de oftalmologia 2006
Oswaldo Ferreira Moura Brasil Maria Vitoria Oliveira Moura Brasil Oswaldo Moura Brasil

The congenital optic disc pit is a rare anomaly that can lead to major visual impairment associated with subretinal fluid accumulation. The authors describe the optical coherence tomography study of three cases of untreated congenital optic disc pits with different levels of visual impairment and its different presentations of intraretinal fluid collections.

2016
Selim Cevher Nedime Sahinoglu-Keskek Fikret Unal Selahaddin Demirduzen Huseyin Oksuz

32-year-old Turkish male patient presented with an optic disk pit and serous macular detachment in the left eye. Spectral domain optical coherence tomography revealed serous macular detachment and retinoschisis. After vitrectomy the retina gradually flattened and vision was gradually improved. We aimed to report a case of serous macula detachment secondary to optic pit and long term result of s...

2015

Submit Manuscript | http://medcraveonline.com Abbreviations: CS: Contrast Sensitivity; MS: Multiple Sclerosis; ANN: Artificial Neural Network; CNS: Central Nervous System; ON: Optic Neuritis; OCT: Optical Coherence Tomography; VA: Visual Acuity; CSF: Contrast Sensitivity Function; CG: Control Group; ONH: Optic Nerve Head; GCC: Ganglion Cell Complex; FLAIR: Fluid Acquisition Inversion Recovery; ...

Journal: :Optics express 2007
Barry Cense Mircea Mujat Teresa C Chen B H Park Johannes F de Boer

Polarization-sensitive optical coherence tomography can be used to measure the birefringence of biological tissue such as the human retina. Previous measurements with a time-domain polarization-sensitive optical coherence tomography system revealed that the birefringence of the human retinal nerve fiber layer is not constant, but varies as a function of location around the optic nerve head. Her...

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