This article traces an ergonomics research odyssey that spanned more than half a century. It started in 1950 with an airplane equipped with a periscope that projected a forward-looking view on a screen above the instrument panel and ended with a partial explanation for the illusion of a shrinking moon as it rises from the horizon. The connecting links along the way are not easy to follow and fly in the face of current theory, but the experimental findings tie the apparent size of visible objects to the focal distance of the eyes. The findings also have practical applications to the design of imaging displays and virtual reality systems.
AcostaH. M. (1997). Multifactor determinants of visual accommodation as a critical intervening variable in the perception of size and distance: Phase I report (Tech. Report AL/HR-TR-1996–0137). Brooks AFB, TXArmstrong Laboratory
2.
AcostaH. M. (2004). Eight factors affecting focal distance and the moon illusion. Unpublished Ph.D. dissertation, New Mexico State University, Department of Psychology
3.
BenelR. A. (1979). Visual accommodation, the Mandelbaum effect, and apparent size. Unpublished Ph.D. dissertation, University of Illinois at Urbana-Champaign, Department of Psychology; Dissertation Abstracts International, 40 (10b), 5044; University Microfilms No. 80–08974
4.
BiersdorfW. R.BairdJ. C. (1966). Effects of an artificial pupil and accommodation on retinal image sizeJournal of the Optical Society of America, 56, 1123–1129
5.
DaviesP. (1973). Effects of movements upon the appearance and duration of a prolonged visual afterimage: I. Changes arising from the movement of a portion of the body incorporated in the afterimage scenePerception, 2, 147–153
6.
GrahamC. H. (1951). Visual perception In StevensS. S. (Ed.), Handbook of experimental psychology (pp. 868–920). New York: Wiley
7.
von HelmholtzH. (1867/1962). A treatise on physiological optics (Vol. 1). New YorkDover
8.
HoldingD. H.SchmidtJ. (1992, November). Accommodation and the blind spot. Paper presented at the 33rd Annual Meeting of the Psychonomics Society (unpublished manuscript, personal communication)
9.
HullJ. C.GillR. T.RoscoeS. N. (1979). Locus of the stimulus to visual accommodationWhere in the world, or where in the eye? (BEL-79–5/AFOSR-79–9). Las Cruces: New Mexico State University, Behavioral Engineering Laboratory
10.
HullJ. C.GillR. T.RoscoeS. N. (1982). Locus of the stimulus to visual accommodation: Where in the world, or where in the eye?Human Factors, 24, 311–319
11.
IavecchiaJ. H.IavecchiaH. P.RoscoeS. N. (1978). The moon illusion: Apparent size and visual accommodation distance (Eng Psy-78–4/AFOSR-78–3). ChampaignUniversity of Illinois at Urbana-Champaign, Department of Psychology
12.
IavecchiaJ. H.IavecchiaH. P.RoscoeS. N. (1983). The moon illusion revisitedAviation, Space, and Environmental Medicine, 54, 39–46
13.
MandelbaumJ. (1960). An accommodation phenomenonArchives of Ophthalmology, 63, 923–926
14.
OwensD. A. (1979). The Mandelbaum effect: Evidence for an accommodative bias toward intermediate viewing distancesJournal of the Optical Society of America, 69, 646–652
15.
RandleR. J. (1970). Volitional control of visual accommodationAGARD Proceedings No. 82 on Adaptation and Acclimatisation in Aerospace Medicine (pp. 20.0–20.11). Neuilly-sur-Seine, France: North Atlantic Treaty Organization
16.
RandleR. J.RoscoeS. N.PetittJ. (1980). Effects of accommodation and magnification on aimpoint estimation in a simulated landing task (Tech. Paper NASA-TP 1635). Washington, DCNational Aeronautics and Space Administration
17.
RoscoeS. N. (1989). The zoom-lens hypothesis In HershensonM. (Ed.), The moon illusion (pp. 31–57). Mahwah, NJ: Erlbaum
18.
RoscoeS. N.CorlL.CouchmanD. H. (1994). Eye accommodation: Use of vernier optometers in behavioral researchInternational Journal of Aviation Psychology, 4, 359–371
19.
RoscoeS. N.HaslerS. G.DoughertyD. J. (1952/1966). Flight by periscope: Making takeoffs and landings; the influence of image magnification, practice, and various conditions of flight (Human Engineering Report SDC 71–16–9). Port Washington, NY: Office of Naval Research, Special Devices Center. (Declassified in 1966 and published verbatim in Human Factors, 8, 13–40.)
20.
RoscoeS. N.OlzakL. A.RandleR. J. (1976). Ground-referenced visual orientation with imaging displays: Monocular versus binocular accommodation and judgments of relative sizeProceedings of the AGARD Conference on Visual Presentation of Cockpit Information Including Special Devices for Particular Conditions of Flying (pp. A5.1–A5.9). Neuilly-sur-Seine, France: North Atlantic Treaty Organization
21.
SimonelliN. M. (1979). Apparent size and visual accommodation under day and night conditionsProceedings of the Human Factors Society 23rd Annual Meeting (pp. 374–378). Santa Monica, CA: SAGE Publications
22.
SimonelliN. M. (1980). The dark focus of visual accommodation: Its existence, its measurement, its effects. (Doctoral dissertation, University of Illinois at Urbana-Champaign, 1980.) Dissertation Abstracts, 41(02B), 722; University Microfilms No. 80–17984
23.
SwindleP. F. (1916). Positive after-images of long durationAmerican Journal of Psychology, 27, 324–334
24.
YoungF. A. (1952). Studies of the projected after-images: III. The projection over large distancesJournal of General Psychology, 47, 207–212
