EFFECTS OF BLUE CUTOFF FILTERS ON COLOR DISCRIMINATION.
NAVAL AIR DEVELOPMENT CENTER JOHNSVILLE PA AEROSPACE MEDICAL RESEARCH DEPT
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The effects on color discrimination of three blue cutoff filters used in simulated photochromic flashblindness protective goggles were evaluated under simulated cockpit red and white lighting. Seventy observers, including eleven flight personnel, participated in the evaluations. The following conclusions and recommendations are based on the results of this study Under similar lighting conditions, color discriminations through the three blue cutoff filters evaluated are not substantially different. The greatest difference in color discriminability occurs across conditions of chromatic and achromatic lighting. The degree of protection provided by a photochromic goggle is the only factor evaluated to date which varies among the three filters. On the basis of the degree of protection provided the goggle with a 45 open transmission with an attainable closed density of 3.5 is the most satisfactory. The open transmission of the goggle should be increased. The attainable closed density should be maintained at 3.5 or better. Author
- Protective Equipment