Peripheral prism glasses: effects of moving and stationary backgrounds

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Jieming ShenAlex R Bowers

Abstract

Unilateral peripheral prisms for homonymous hemianopia (HH) expand the visual field through peripheral binocular visual confusion, a stimulus for binocular rivalry that could lead to reduced predominance and partial suppression of the prism image, thereby limiting device functionality. Using natural-scene images and motion videos, we evaluated whether detection was reduced in binocular compared with monocular viewing. Detection rates of nine participants with HH or quadranopia and normal binocularity wearing peripheral prisms were determined for static checkerboard perimetry targets briefly presented in the prism expansion area and the seeing hemifield. Perimetry was conducted under monocular and binocular viewing with targets presented over videos of real-world driving scenes and still frame images derived from those videos. With unilateral prisms, detection rates in the prism expansion area were significantly lower in binocular than in monocular (prism eye) viewing on the motion background (medians, 13 and 58%, respectively, p = 0.008) but not the still frame background (medians, 63 and 68%, p = 0.123). When the stimulus for binocular rivalry was reduced by fitting prisms bilaterally in one HH and one normally sighted subject...Continue Reading

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Citations

Jul 21, 2017·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Eli Peli, Jae-Hyun Jung
Aug 26, 2015·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Amy L DohertyGang Luo
Apr 9, 2016·Science China. Life Sciences·Rong-Ding HeRong-Qiao He
Oct 16, 2020·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Eli Peli
Oct 12, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Jae-Hyun JungEli Peli

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