Reduced contrast sensitivity when viewing through an aircraft windscreen
Hughes, P.K.; Vingrys, A.J.
Aviation Space and Environmental Medicine 62(3): 254-257
1991
ISSN/ISBN: 0095-6562 PMID: 2012574 Document Number: 386422
The Contrast Sensitivity Function (CSF) of an experienced observer was measured under normal viewing conditions, when looking through an aircraft windscreen and when looking through the windscreen in the presence of a glare source. We found that contrast sensitivity was significantly reduced for frequencies above about 6 cycles/degree viewed through the windscreen and that the addition of a glare source further reduced contrast sensitivity for all spatial frequencies greater than 1 cycle/degree. These results demonstrate that the CSF is a sensitive metric of degraded visual performance when viewing through optical transparencies.