نتایج جستجو برای: peripapillary structures

تعداد نتایج: 456590  

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...

2014
Dong Eik Lee Ju Hyang Lee Han Woong Lim Min Ho Kang Hee Yoon Cho Mincheol Seong

PURPOSE To evaluate the effect of pattern scan laser (PASCAL) photocoagulation on peripapillary retinal nerve fiber layer (RNFL) thickness, central macular thickness (CMT), and optic nerve morphology in patients with diabetic retinopathy. METHODS Subjects included 35 eyes for the PASCAL group and 49 eyes for a control group. Peripapillary RNFL thickness, cup-disc area ratio and CMT were measu...

2017
Yuan Zong Huan Xu Jian Yu Chunhui Jiang Xiangmei Kong Yi He Xinghuai Sun

The impairment of retinal vascular autoregulation can be an early manifestation of many systemic and ocular diseases. Therefore, quantifying retinal vascular autoregulation in a non-invasive manner is very important. This study evaluated the effects of a Valsalva maneuver (VM)-induced blood pressure increases on retinal vascular autoregulation. Parafoveal and peripapillary retinal vessel densit...

Journal: :Investigative ophthalmology & visual science 2004
Nicolaas J Reus Hans G Lemij

PURPOSE To investigate the relationship between retinal light sensitivity measured with standard automated perimetry (SAP) and retardation of the peripapillary retinal nerve fiber layer (RNFL) measured with the GDx VCC (Laser Diagnostic Technologies, Inc., San Diego, CA). METHODS Forty-seven healthy subjects and 101 patients with glaucoma were examined with SAP and with the commercially avail...

Journal: :International journal of clinical and experimental medicine 2015
Dong Shao Jian Ping Chen

BACKGROUND Peripapillary choledochoduodenal fistula (PCDF) is occasionally detected during endoscopic retrograde cholangiopancreatography. This study was designed to compare perioperative outcomes of the peripapillary choledochoduodenal fistula with bile duct stones via endoscopic papillary balloon dilatation and conventional endoscopic sphincterotomy. METHODS We retrospectively reviewed 28 p...

2015
Gordon S. K. Yau Jacky W. Y. Lee Tiffany T. Y. Woo Raymond L. M. Wong Ian Y. H. Wong

PURPOSE To investigate the central macular thickness (CMT) in myopic, emmetropic, and hyperopic Chinese children using Optical Coherence Tomography. METHODS 168 right eyes of Chinese subjects aged 4-18 were divided into 3 groups based on their postcycloplegic spherical equivalent: myopes (<-1.0 D); emmetropes (≥-1.0 to ≤+1.0 D); and hyperopes (>+1.0 D) and the CMT was compared before/after ag...

Journal: :Ophthalmology 2013
Kaweh Mansouri Felipe A Medeiros Nicholas Marchase Andrew J Tatham Daniel Auerbach Robert N Weinreb

OBJECTIVE To evaluate changes in peripapillary and macular choroidal thickness and volume after the water-drinking test (WDT) using swept-source optical coherence tomography (SS OCT). DESIGN Prospective, cross-sectional, observational study. PARTICIPANTS Fifty-six eyes of 28 healthy volunteers. METHODS Participants underwent a 3-dimensional optic disc and macula scanning protocol with a p...

Journal: :European journal of ophthalmology 2007
T Hayashi T Takeuchi T Gekka K Kitahara

PURPOSE The authors report the ophthalmic characteristics of a male proband in a Japanese family with autosomal dominant optic atrophy (DOA) harboring a frameshift mutation in the OPA1 gene. METHODS Conventional ophthalmologic examinations including static automated perimetry were performed, as well as assessment of the three-generation family history. The peripapillary retinal nerve fiber la...

Journal: :Journal of the Chinese Medical Association : JCMA 2017
Fang-Yi Tsai Ling-Ing Lau An-Fei Li Shih-Jen Chen Shin-E Wang Fenq-Lih Lee Catherine Jiu-Lin Liu Yi-Ming Shyr

BACKGROUND The effect of pancreas transplantation on diabetic retinopathy remains inconclusive. Herein, we report six patients with type 1 diabetes mellitus (DM) who underwent pancreas transplantation and developed acute macular edema and peripapillary soft exudate with rapid progression to proliferative diabetic retinopathy. METHODS In this retrospective observational study, diabetic patient...

2013
Sonia Mehta Luxme Hariharan Allen C Ho John H Kempen

BACKGROUND Choroidal neovascularization (CNV) is a rare complication of intermediate uveitis. Risk factors are not well-characterized. Here, we describe a case of peripapillary CNV in a patient with intermediate uveitis and explore the pathophysiology and treatment of this condition. This study is a case report and review of the literature. RESULTS A 15-year-old boy with intermediate uveitis ...

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