Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Retinal illuminance"”.
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The Effect of interocular Difference of Retinal Illuminance on Streopsis
… eexaminedtheeffectofinducedinteroculardifferenceofretinal illuminanceon stereopsisunderbinocularcycloplegiatoeliminatethechange of pupilsizeandaccommodation. METHODS: Fifty adultswho havebestcorrected visualacuity 1.0 orbetter and normalbinocularity were examined with neutraldensity filters under …
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A study of mechanisms for discomfort glare
… into the corresponding mechanisms. We measured retinal illuminance levels for discomfort glare at threshold as a function of source size, eccentricity and surrounding background luminance. In addition, the pupil size was measured throughout and related to the measured thresholds for discomfort …
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Scotopic Vision: Behavioral Sensitivity and Underlying Optical and Neural Factors
… were quite similar when compared in terms of retinal illuminance adjusted for three major optical factors (pupil size, focal length and the cat's tapetum). For both species, scotopic increment thresholds were proportional to the square root of retinal illuminance, in accordance with the de …
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Caffeine's influence on critical flicker frequency thresholds
… Frequency (CFF) thresholds at 15 levels of retinal illuminance (-1.0 to 3.0 log trolands) in each of four caffeine dosage conditions (0, 200mg, 400mg, 600mg). Variables of interest included dosage, gender, left and right eye differences, and time after ingestion. Significant results were …
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Spatial and temporal aspects of visual performance in relation to light level and normal aging
… states that older people experience losses of retinal neurons including rods, cones and ganglion cells. Furthermore, older people tend to have particular difficulties with vision at low light levels which can be attributed to greater loss of rods than cones, particularly at parafoveal …
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The use of silent substitution in measuring isolated cone- & rod- human electroretinograms. An electrophysiological study of human rod- and cone- photoreceptor activity derived using silent substitution paradigm
… that is conventionally used in assessment of retinal function in health and disease. Although there is ongoing research in developing ERG- recording techniques, interpretation and clinical applications, there is still a limited understanding on how each photoreceptor class contribute to the …