Dynamic visual acuity in an applied setting.

Research on Visual Target Detection. Part I. Development of an Air-to-Ground Detection/Identification Model

“…Although detrimental effects of angular velocity have not been found in field studies of actual targets, Goodson and Miller (1959) found that visual acuity does deteriorate in the air with increased speeds in much the same manner as it does in the laboratory when similar targets (Landolt C's) are used.…”

“…With a dynamic search task, foveal acuity became more important than peripheral acuity as display velocity increased. Goodson and Miller (1959)found that laboratory measures of dynamic visual acuity discriminated between observers' detection performances in actual flight tests at high speeds.…”

Air-to-Ground Target Acquisition Source Book: A Review of the Literature

“…Snyder and Greening used a formula of the same general form as the Miller and Ludvigh formula. Goodson and Miller, 1959) that have indicated operational thresholds to be as much as 30 percent greater than the ideal laboratory conditions. (1965).…”

“…Note that since the functions in Figure 2-8 are positively accelerated curves rather than straight line functions, this figure provides an example of the non-linear behavior of the human visual Sy a t am, Dugas (1962) pointed out that under actual flight conditions vibration effects, atmospheric attenuation, low contrast targets and viewing window distortions would reduce dynamic visual performance. She cited airborne tests (e.g.,Goodson and Miller, 1959) that have indicated operational thresholds to be as much as 30 percent greater than the ideal laboratory…”

Stimulus determinants of dynamic visual acuity: I. Background and exploratory data.

“…Similar results are obtained when the observer moves with respect to a stationary target; for example, or. a rotating platform (6) or in ai• airplane (9). UTILITY DVA has several characteristics which recommend its inclusion for purposes of visual assessment.…”