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The absolute threshold of the dark-adapted retina for a 1 degree circular white light stimulus located at 15 degrees eccentric to the fovea was measured on four meridians. In each of the 11 tested subjects the sensitivity was found to be higher on the 90 degrees suprafoveal vertical meridian, on average by 0.3 log nLa compared to the subfoveal vertical(More)
The scotopic threshold of 7 subjects was measured with a 1 degree circular white light located 15 degrees below fixation during 45 min at rest followed by 10 min of running on an exercise treadmill. The slope of the treadmill was adjusted individually so that the effort extended by each subject required 60-75% of his maximum oxygen uptake. Thresholds showed(More)
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