The blur horopter: Retinal conjugate surface in binocular viewing
| Autor: | Agostino Gibaldi, Martin S. Banks, Larry N. Thibos, Vivek Labhishetty |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
accommodation
genetic structures Emmetropia 050105 experimental psychology Article Retina 03 medical and health sciences 0302 clinical medicine medicine point-spread function Humans 0501 psychology and cognitive sciences Computer vision Depth of field natural-scene statistics Mathematics Vision Binocular Monocular binocular horopter Horopter business.industry 05 social sciences Fovea centralis Scene statistics retinal conjugate surface Accommodation Ocular Sensory Systems eye diseases Visual field Ophthalmology medicine.anatomical_structure wavefront aberrations Artificial intelligence sense organs Visual Fields business Binocular vision 030217 neurology & neurosurgery parafoveal and peripheral retina |
| Zdroj: | Journal of Vision |
| ISSN: | 1534-7362 |
| Popis: | From measurements of wavefront aberrations in 16 emmetropic eyes, we calculated where objects in the world create best-focused images across the central 27\(^\circ\) (diameter) of the retina. This is the retinal conjugate surface. We calculated how the surface changes as the eye accommodates from near to far and found that it mostly maintains its shape. The conjugate surface is pitched top-back, meaning that the upper visual field is relatively hyperopic compared to the lower field. We extended the measurements of best image quality into the binocular domain by considering how the retinal conjugate surfaces for the two eyes overlap in binocular viewing. We call this binocular extension the blur horopter. We show that in combining the two images with possibly different sharpness, the visual system creates a larger depth of field of apparently sharp images than occurs with monocular viewing. We examined similarities between the blur horopter and its analog in binocular vision: the binocular horopter. We compared these horopters to the statistics of the natural visual environment. The binocular horopter and scene statistics are strikingly similar. The blur horopter and natural statistics are qualitatively, but not quantitatively, similar. Finally, we used the measurements to refine what is commonly referred to as the zone of clear single binocular vision. |
| Databáze: | OpenAIRE |
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