D. H. Foster

Towards peaceful protest in South Africa: Testimony of multinational panel regarding lawful control of demonstrations in the Republic of South Africa before the Commission of Inquiry regarding the prevention of public violence and intimidation (1992)

Heymann, P.B., Brown, L.P., Foster, D.H., Geldenhuys, T., Louw, C., ...

Comparison of methods for enumeration of selected coliforms exposed to ozone.

Adams, J C, Lytle, M S, Dickman, D G, Foster, D H, Connell, J P, Bressler, W R

mT7 medium performed no better than m-Endo medium in enumerating cells of Escherichia coli and Citrobacter freundii exposed to ozone. Also, there was no difference in the plate count of heterotrophic...

Comparison of methods for enumeration of selected coliforms exposed to ozone.

Adams, J C, Lytle, M S, Dickman, D G, Foster, D H, Connell, J P, Bressler, W R

mT7 medium performed no better than m-Endo medium in enumerating cells of Escherichia coli and Citrobacter freundii exposed to ozone. Also, there was no difference in the plate count of heterotrophic...

Detecting natural changes of cone-excitation ratios in simple and complex coloured images.

Nascimento, S M, Foster, D H

Ratios of excitations in each cone-photoreceptor class produced by light reflected from pairs of surfaces in a scene are almost invariant under natural illuminant changes. The stability of these...

Multiple groups of orientation-selective visual mechanisms underlying rapid orientated-line detection.

Foster, D H, Westland, S

Visual search for an edge or line element differing in orientation from a background of other edge or line elements can be performed rapidly and effortlessly. In this study, based on psychophysical...

Detection of colour vision abnormalities in uncomplicated type 1 diabetic patients with angiographically normal retinas.

Hardy, K J, Lipton, J, Scase, M O, Foster, D H, Scarpello, J H

Colour vision function was assessed in 38 non-complicated type 1 diabetic patients in whom fluorescein angiography was normal, and was compared with that in 36 age-matched, non-diabetic controls. All...

Effect of diabetes associated increases in lens optical density on colour discrimination in insulin dependent diabetes.

Hardy, K J, Scarpello, J H, Foster, D H, Moreland, J D

Optical density (OD) of the crystalline lens has been shown in non-diabetics to increase linearly with age over the first five decades and at an increased rate thereafter; in insulin dependent...

Comparison of colour discrimination and electroretinography in evaluation of visual pathway dysfunction in aretinopathic IDDM patients.

Hardy, K J, Fisher, C, Heath, P, Foster, D H, Scarpello, J H

The slow progression of diabetic retinopathy makes it difficult to assess the effects of intervention therapy. There is thus a need for surrogate markers of visual change in diabetes. Colour vision...

Effect of short term changes in blood glucose on visual pathway function in insulin dependent diabetes.

Hardy, K J, Scase, M O, Foster, D H, Scarpello, J H

BACKGROUND--Visual pathway function is abnormal in patients with insulin dependent diabetes mellitus (IDDM) without retinopathy, yet the mechanism underlying this abnormality is unknown. It is...

Diabetes and retinal function.

Hardy, K J, Lipton, J, Scase, M O, Scarpello, J H, Foster, D H

Paradoxical effects of temperature in multiple sclerosis.

Honan, W P, Heron, J R, Foster, D H, Snelgar, R S

Six cases of multiple sclerosis are reported in which cold produced a temporary exacerbation of symptoms and signs of the disease. Also, in one case investigated in detail by psychophysical methods,...

Failure of many ophthalmologists to use lasers safely.

Hardy, K J, Lipton, J R, Foster, D H, Scarpello, J H

In 1990, after the detection of impairment of colour discrimination in laser operators, the College of Ophthalmologists recommended safety guidelines for the use of lasers. We measured the...