28% for Polaroid gray filter, gray, brown and green filter respectively and the luminance of room was 476 cd [m.
However, Paired Samples-T test showed significant difference between stereopsis without filter and with gray filter and with polarized gray filter in the sunlight (p <0.
This can be important in improving the visual performance of the users especially given that the least disruption of color vision with gray filter is vital for sensitive work such driving.
Contrast sensitivity showed that the greatest increase was while wearing a gray filter in the sun.
Also, regarding stereo acuity, gray filter had a negative effect on stereopsis.
Status Without filter Without filter Gray filter Statistical in the room under the index sun light Mean [+ or -] SD 432.
The spot (edited to have what looks like an eerie gray filter
from Instagram over it) shows a young boy narrating how he will never learn to ride a bike, get cooties from a girl, learn to fly, or get married, as a soft but deceptively uplifting song plays in the background.