نتایج جستجو برای: networks drusen fundus photography

تعداد نتایج: 453270  

2005
V Sivagnanavel R T Smith G B Lau J Chan C Donaldson N V Chong

Aims: To assess the portability and clinical applicability of a software program based on Photoshop (Adobe Systems Inc, San Jose, CA, USA) for digital drusen quantification. Methods: Independent graders from the Digital Fundus Photo Reading Center of Columbia University and King’s College Hospital used macular background levelling software to quantify the percentage of drusen in the central and...

Journal: :Investigative ophthalmology & visual science 2008
Margaret A Chang Susan B Bressler Beatriz Munoz Sheila K West

PURPOSE To evaluate risk factors for the incidence and progression of age-related macular degeneration (AMD) in a racially heterogeneous, geriatric population. METHODS Subjects (n = 2240) aged 65 to 84 years underwent 2 examinations separated by 2 years, of which 1937 subjects (85%) were included in this report. Fundus photographs were performed at each examination and were graded by trained ...

Journal: :Investigative ophthalmology & visual science 2008
Shih-Jen Chen Ching-Yu Cheng Kai-Ling Peng An-Fei Li Wen-Ming Hsu Jorn-Hon Liu Pesus Chou

PURPOSE To assess the prevalence and associated risk factors of age-related macular degeneration (AMD) in an elderly Chinese population in Taiwan. METHODS The Shihpai Eye Study was a survey of vision and ocular disease in an elderly Chinese population 65 years of age or older residing in Shihpai, Taipei, Taiwan. Of 2045 elderly residents randomly sampled from the household registration databa...

Journal: :Investigative ophthalmology & visual science 2013
Shiri Zayit-Soudry Jacque L Duncan Reema Syed Moreno Menghini Austin J Roorda

PURPOSE To evaluate cone spacing using adaptive optics scanning laser ophthalmoscopy (AOSLO) in eyes with nonneovascular AMD, and to correlate progression of AOSLO-derived cone measures with standard measures of macular structure. METHODS Adaptive optics scanning laser ophthalmoscopy images were obtained over 12 to 21 months from seven patients with AMD including four eyes with geographic atr...

2018
Angelica Ly Lisa Nivison‐Smith Barbara Zangerl Nagi Assaad Michael Kalloniatis

BACKGROUND The aim of this study is to evaluate the diagnosis, staging, imaging and management preferences, and the effect of advanced imaging among practising optometrists in age-related macular degeneration (AMD). METHODS Up to 20 case vignettes (computer-based case simulations) were completed online in a computer laboratory in random order by 81 practising optometrists of Australia. Each c...

2015
Ramachandran Rajalakshmi Subramanian Arulmalar Manoharan Usha Vijayaraghavan Prathiba Khaji Syed Kareemuddin Ranjit Mohan Anjana Viswanathan Mohan William H. Merigan

AIM To evaluate the sensitivity and specificity of "fundus on phone' (FOP) camera, a smartphone based retinal imaging system, as a screening tool for diabetic retinopathy (DR) detection and DR severity in comparison with 7-standard field digital retinal photography. DESIGN Single-site, prospective, comparative, instrument validation study. METHODS 301 patients (602 eyes) with type 2 diabete...

2016
Tuncay Topal Akin Cakir Eyup Duzgun Kenan Olcay Yildiray Yildirim Melih Hamdi Unal

Optic disc drusen (ODD) is hyaline-like calcified material accumulation that may occur at the optic nerve head. It is seen in approximately in 0.3% of the population and is often bilateral. Since bilateral cases might mimic papilledema, it is important to make the differential diagnosis. In this report; a patient followed in the neurology department with suspected papilledema and diagnosed with...

Journal: :European journal of ophthalmology 1991
I M Ribeiro P J Vale P A Tenedorio P A Rodrigues M A Bilhoto H C Pereira

PURPOSE To report the prevalence of ocular abnormalities in a group of Portuguese children with a complete fetal alcohol syndrome (FAS). METHODS Complete ophthalmologic examination in a sample of consecutive children with FAS. Ocular fundus photography was carried out on the cooperative FAS children and on 25 reference children. Ocular fundus anomalies were recorded by the observation of ocul...

2014
Peng Zhou Ram Kannan Christine Spee Parameswaran G. Sreekumar Guorui Dou David R. Hinton

Age-related macular degeneration (AMD) is a leading cause of blindness in the developed world. The retinal pigment epithelium (RPE) is a critical site of pathology in AMD and αB crystallin expression is increased in RPE and associated drusen in AMD. The purpose of this study was to investigate the role of αB crystallin in sodium iodate (NaIO3)-induced retinal degeneration, a model of AMD in whi...

2011
Zhenyang Zhao Yan Chen Jian Wang Paul Sternberg Michael L. Freeman Hans E. Grossniklaus Jiyang Cai

BACKGROUND Cumulative oxidative damage is implicated in the pathogenesis of age-related macular degeneration (AMD). Nuclear factor erythroid 2-related factor 2 (NRF2) is a transcription factor that plays key roles in retinal antioxidant and detoxification responses. The purposes of this study were to determine whether NRF2-deficient mice would develop AMD-like retinal pathology with aging and t...

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