Zobrazeno 1 - 10
of 13
pro vyhledávání: '"J L, Barbur"'
Autor:
J L, Barbur, E, Konstantakopoulou, M, Rodriguez-Carmona, J A, Harlow, A G, Robson, J D, Moreland
Publikováno v:
Ophthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 30(5)
The measurement of macular pigment optical density (MPOD) in the eye is often carried out using optical techniques based on heterochromatic flicker photometry (HFP). These require the use of two spectrally-narrow beams, one at the wavelength of maxim
Autor:
B J, Jennings, J L, Barbur
Publikováno v:
Ophthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 30(5)
Colour threshold discrimination ellipses were measured for a number of states of chromatic adaptation and a range of luminance levels using the Colour Assessment and Diagnosis (CAD) test. An analysis of these results was carried out by examining the
Publikováno v:
Ophthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 30(5)
Abnormalities in rod and cone photoreceptor morphology have been reported in normal aging retinas in the absence of known pathology and have been taken as an indicator of susceptibility to retinal disease. Some loss of visual performance may therefor
Publikováno v:
Ophthalmicphysiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 18(2)
The rising mean age of our population has increased the need for understanding the physiologic consequences of ageing on visual function. Changes due to age were evaluated using a new scatter test implemented on the P_SCAN 100 pupillometer apparatus
Publikováno v:
Vision Science and its Applications.
When the amount of scattered light in the eye is large, either as a result of changes in the structure of the eye or the presence of intense sources of light, this results in significant impairment of vision, sometimes described as disability glare (
Publikováno v:
Noninvasive Assessment of the Visual System.
Scattering of light is present in the human eye and ends up illuminating the retina away from the image of a source, although some of the light can be back-scattered through the pupil and this is particularly evident in patients with corneal scars or
Publikováno v:
Noninvasive Assessment of the Visual System.
Cerebral achromatopsia describes the loss of perceived colour following damage to certain areas of the visual cortex. The brain lesions causing such a syndrome are bilateral when both visual hemifields are affected and localised outside V1 in the lin
Publikováno v:
Noninvasive Assessment of the Visual System.
Colour difference thresholds reflect the sensitivity of the channels involved in chromatic discrimination and have been measured elegantly by MacAdam for several directions of modulation in the CIE (x,y) - chromaticity diagram from estimates of stand
Publikováno v:
Noninvasive Assessment of the Visual System.
Damage to the striate cortex in human subjects results in phenomenal "blindness" in corresponding parts of the retinal-cortical map. Paradoxically, in monkeys visual capacity can still be demonstrated in the affected parts of the visual field, and ca