Visual Issues Survey of AH-64 Apache Aviators (Year 2000)

The Issue of Visual Correction Compatibility with Helmet-Mounted Displays

“…The problems associated with use of spectacles with the Apache HMD continue. In a recent survey, Rash et al (2001) found Apache pilots wearing spectacle corrections expressing many of the same concerns as previously: Inability to properly position the eye when using the HMD/IHADSS/HDU, discomfort, and problems using bifocals with the IHADSS. These problems are exacerbated when a protective mask is worn.…”

“…In a recent survey of Apache aviators, Rash et al (2001) found that almost 33 percent of AH-64 Apache pilots needing visual correction wore CLs while flying, sometimes in combination with spectacles. CL wear for army pilots is currently restricted to Apache pilots, because they must use the IHADSS, which is only marginally compatible with spectacle wear.…”

“…Still, it is a viable solution for many applications, particularly when spectacles cannot be used. As found in the survey of Apache aviators that use the IHADSS, pilots try every combination of solutions that they think might work (Rash et al, 2001). These include combining spectacle and CL use or even removing one spectacle lens.…”

The Effect of a Monocular Helmet-Mounted Display on Aircrew Health: A Cohort Study of Apache AH Mk1 Pilits Two-Year Baseline Review

“…These questions were included because head-supported mass is an important factor with HMD systems, including NVGs. The NVG head-supported mass is typically reported at 2.6 kilograms (5.73 pounds) (Rash, 2000).…”

Fitting Issues Survey for the AH-64 Integrated Helmet and Display Sighting System

“…Additionally, a significant amount of research has been performed regarding the visual issues of the system (Behar et al, 1990;Rash et al, 2001, Hiatt et al, 2001). However, a limited amount of research has focused on IHADSS helmet fit user satisfaction with the exception of a study performed early in the fielding of the original IHADSS helmet (Rash et al, 1987).…”