Baseball hitting, binocular vision, and the Pulfrich phenomenon

Archives of Ophthalmology
A J HofeldtB Bonafede

Abstract

To determine if dimming the light to 1 eye affects baseball hitting (motion-in-depth) and if binocular interaction influences the ability to hit a baseball. The ability to hit baseballs in a batting cage was measured under conditions of (1) no filter before either eye, (2) neutral density filters before both eyes, and (3) a neutral density filter before 1 eye, while viewing with both eyes. Batting scores were based on the number of hits, fouls, and misses. A neutral density filter of 0.6 optical density before both eyes had no significant effect on batting ability compared with no filter (87% vs 94%). While viewing binocularly, a filter before 1 eye caused a significantly greater reduction in hitting scores than when the filter was placed before the opposite eye (36% vs 80%). This greater effect of 1 eye on hitting scores denotes an ocular preference or dominance within the motion stereopsis system. The eye associated with the greater reduction in hitting ability when dimmed by a filter was termed the dominant eye for motion stereopsis. In comparison with placing 0.6-optical density filters before both eyes, the same filter before the dominant eye reduced hitting ability (36% vs 87%), but when the filter was placed before the n...Continue Reading

Citations

Jul 20, 2007·Journal of Neurology, Neurosurgery, and Psychiatry·M O'Doherty, D I Flitcroft
Jun 3, 2015·Neurology·Douglas J LanskaBernd F Remler
Apr 8, 2011·Eye & Contact Lens·Alan W ReichowRichard Y Baird
Mar 18, 2020·Vision·Brian K Foutch, Carl J Bassi
Jan 10, 2018·Scientific Reports·Kyle BurrisL Gregory Appelbaum

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