Aviat Space Envir Md
-
Aviat Space Envir Md · Apr 1988
The effect of two lighting conditions on performance of the Farnsworth Lantern color vision test.
This paper compares the performance of color defective patients on the Farnsworth Lantern test in both unlit and lit room conditions. We examined 18 dichromats and 33 anomalous trichromats, as diagnosed by the Mark I Nagel Anomaloscope. No statistically significant differences were found between their performance in the two conditions.
-
Ejection on or near the ground appears potentially injurious, especially since the survival rate decreases as altitude of ejection decreases. Ejection data from 1973 through 1985 were reviewed to analyze whether ground-level take-off and landing ejections posed an increased risk of injury or death. This review included only ejections clearly requiring a decision between ground egress and ejection. ⋯ Ejection during take-off and landing phases is as safe as ejection above 500 ft. safer than other ejections below 500 ft, and does not result in excess injury rates. Ejection systems are sometimes damaged by impact or fire. In the emergencies considered, ejection offered greatly increased chances for survival over ground egress.