| Title | Visual evaluation of smoke-protective devices. |
|---|---|
| Record ID | 39276 |
| Personal Name Creator |
Vaughan, John A.; Welsh, Kenneth W. |
| Corporate Creator | Civil Aeromedical Institute |
| Corporate Contributor |
United States. Office of Aviation Medicine |
| Publisher | Civil Aerospace Medical Institute |
| Publication Date | 19760500 |
| Language | English |
| Abstract | This study was designed to determine the visual characteristics of smoke-protective devices for flight deck crews. Visual measurements were made on five male subjects, who ranged in age from 35 to 54, while they were wearing each of the 26 devices tested. These measurements included 1.visual field, 2.visual acuity, 3.stereoscopic depth perception, 4.color vision, and 5.bifocal displacement. Reduction in the temporal and inferior fields was found with some of the goggles-mask combinations. The data indicate that 30.8 percent of the test items degraded visual acuity below 20/20 at the 0.4 m distance, 15.4 percent at 0.76 m, and 7.6 percent at 6.0 m. Mean values of depth perception ranged from 2.4 percent to 404.4 percent over control. The three tinted goggles created no alterations in color perception. Bifocals worn with the oxygen mask were displaced upward; those worn with the one-piece test items were displaced downward. Criteria for an acceptable smoke-protective device are discussed. |
| Rosap ID | dot:21077 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/21077 |
| TRT Terms | Air transportation crashes; Smoke; Goggles; Oxygen equipment; Breathing apparatus; Performance tests; Vision; Color vision; Depth perception; Optical lenses; Peripheral vision; Vision tests; Human subject testing |
| General Subjects | Aircraft accidents; Smoke; Airplanes--Oxygen equipment; Safety goggles; Performance--Testing; Vision--Testing; Color vision; Depth perception; Visual acuity; Peripheral vision; Bifocal lenses; Eyeglasses |
| Classification | NTL - AVIATION - AVIATION; NTL - AVIATION - Aviation Safety/Airworthiness; NTL - SAFETY AND SECURITY - Accidents; NTL - SAFETY AND SECURITY - Aviation Safety/Airworthiness; NTL - SAFETY AND SECURITY - Human Factors |
| Geographical Coverage |
United States |
| Report Number | FAA-AM-76-5; DOT/FAA/AM-76/5 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/39000/39200/39276/AM76-05.pdf |
| Format | |
| Database | NTL Digital Repository |