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David F Edgar
Researcher at RMIT University
Publications - 100
Citations - 2420
David F Edgar is an academic researcher from RMIT University. The author has contributed to research in topics: Glaucoma & Referral. The author has an hindex of 23, co-authored 94 publications receiving 2114 citations. Previous affiliations of David F Edgar include Northampton Community College & Vision-Sciences, Inc..
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Journal ArticleDOI
Improvements on Littmann's method of determining the size of retinal features by fundus photography.
TL;DR: Three new methods of determining Littmann's factor q become available: simply reducing the axial length by a constant 1 · 82 mm; constructing a personalized schematic eye, given additional data; and ray tracing through this eye to extend calculations to peripheral retinal areas.
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Exploring eye movements in patients with glaucoma when viewing a driving scene
David P. Crabb,Nicholas D. Smith,F. Rauscher,Catharine M. Chisholm,John L. Barbur,David F Edgar,David F. Garway-Heath +6 more
TL;DR: Eye movements in glaucomatous patients when viewing driving scenes in a hazard perception test (HPT) can differ significantly from age-matched controls when viewing a traffic scene, and there were revealing cases where patients failed to see a hazard in relation to their binocular visual field defect.
Journal ArticleDOI
Supplementation with the carotenoids lutein or zeaxanthin improves human visual performance
Jessica Kvansakul,Marisa Rodriguez-Carmona,David F Edgar,Felix M. Barker,Wolfgang Köpcke,Wolfgang Schalch,John L. Barbur +6 more
TL;DR: This study investigates two new hypotheses for possible MP functions in diurnal primate species when vision spans a range of ambient illumination and is mediated by cone and rod photoreceptors.
Journal ArticleDOI
Acquired colour vision defects in glaucoma-their detection and clinical significance.
TL;DR: Controversy still surrounds the nature of colour vision defects in primary open angle glaucoma (POAG), and comparing previous research evaluating chromatic discrimination in POAG is complicated by wide variations in methodology and experimental conditions.
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The effect of age on the light scattering characteristics of the eye
TL;DR: The ageing eye reveals a more rapid increase in forward scatter, and a reduction in contrast sensitivity, despite apparently good visual acuity above 45 years, according to a new scatter test implemented on the P_SCAN 100 pupillometers.