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Biomedical subjects

A Glansholm

Publications and source records attributed to A Glansholm.

5 recordsLinked to original sources
PubMed1985

Infrared radiation and cataract. III. Differences between the two eyes of glass workers.

In an epidemiologic investigation of the eyes of 209 glass workers with occupational exposure to infrared (IR) radiation and 298 non-IR-exposed controls, the two eyes were compared regarding the degree of lens opacities. The left eye was found to be the most affected in a significantly larger number of persons than the right in IR-exposed workers. The exposure to the two eyes was measured with a system of two pyroelectric radiometers monted in a face mask. The left eye was found to be exposed up to 2.3 times as much as the right in some working moments and never less. These results show a dose-effect correlation between IR-exposure and cataract.

Adult↗
PubMed1984

Ocular exposure to infrared radiation in the Swedish iron and steel industry.

This study was carried out to determine the level of potentially off-damaging infrared (IR) radiation in the iron and steel industry. Determinations of IR radiation were made in different positions in many types of processes. Forging was found to give the highest radiant exposure to the eyes, while workers in electrosteel mills are considerably less exposed.

Environmental Exposure↗
PubMed1975

Optical and neural resolution in peripheral vision.

Visual acuity along the horizontal meridian in the peripheral field of vision was determined at a photopic level in two normal subjects. Two types of sinusoidally modulated, monochromatic test patterns of high contrast were used. One was produced directly on the retina by an interferometric technique. The other type was imaged on the retina by the dioptric apparatus of the eye; the resulting image suffered ordinary optical image degradation. The results from the interferometric acuity determinations represent maximal neural discrimination across the visual field. Acuity decreases monotonically toward the periphery, from about 45 cycles per degree in the fovea, to about 0.8 at 80 degrees of eccentricity in the temporal field. The decline is well described by a second-degree polynomial. Acuity for test patterns imaged by the optics of the eye was consistently lower than interferometric acuity. The difference increases toward the periphery. It is attributable to effects of optical aberrations. The discrepancy between optical and neural resolving power on oblique incidence needs to be taken into account whenever results obtained with external, extra-axial stimuli are to be analyzed in terms of retinal architecture.

Adult↗