Central Vision Loss
Central Vision Loss - Related Videos
07:12
A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
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Cited by 1 •
2025
We present development of a gaze-contingent display framework designed for perceptual and oculomotor research simulating central vision loss. This framework is particularly adaptable for studying compensatory behavioral and oculomotor strategies in individuals experiencing both simulated and pathological central vision loss.
09:29
A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
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Cited by 26 •
2014
We describe an indoor, portable, standardized course that can be used to evaluate obstacle avoidance in persons who have ultralow vision. The course is relatively inexpensive, simple to administer, and has been shown to be reliable and reproducible.
05:44
Workflows for the Photopic Negative Response and the Baby Vision Test
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2026
This article presents standardized workflows for the photopic negative response (PhNR) and the Baby Vision Test, two underutilized but clinically valuable electrophysiological modalities, to reduce procedural variability and enhance their diagnostic utility in glaucoma and pediatric visual disorders.
01:24
Vision
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2019
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed. Light is absorbed by the rod and cone...
12:27
Piping Networks and Pressure Losses
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2023
Source: Alexander S Rattner, Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA This experiment introduces the measurement and modeling of pressure losses in piping networks and internal flow systems. In such systems, frictional flow resistance from channel walls, fittings, and obstructions causes mechanical energy in the form of fluid pressure to be converted to heat. Engineering analyses are needed to size flow hardware to ensure...
FAQs
Eccentric viewing redirects gaze so that a person uses a functioning retinal or visual-field area away from the impaired center. This strategy can help preserve access to visual information when direct fixation is less effective. In behavior research, examining where a person looks during reading, face recognition, or visually guided actions can reveal how visual loss changes task performance.
Behavioral effects depend on how much a task requires fine, centrally processed detail. Reading and recognizing faces may become especially difficult, whereas activities that can be guided by remaining peripheral vision may be less disrupted. This difference helps explain why the same person may alter communication or daily routines selectively rather than experience identical difficulty across every activity.
Auditory and tactile cues provide information when visual detail is unreliable. A person may listen for relevant sounds, use touch to identify or orient to objects, or combine these signals with remaining vision. Such multisensory compensation changes how tasks are performed and gives behavior researchers a way to study adaptation rather than viewing visual impairment only as loss.
Assessment can focus on the relationship between visual information and observable behavior across reading, face recognition, navigation, and everyday routines. Researchers can note whether a person adopts eccentric viewing, increases reliance on auditory or tactile cues, or changes task methods. These observations help distinguish the visual challenge from the compensatory strategy and guide rehabilitation or assistive-technology decisions.
These approaches are relevant when altered vision interferes with visually guided behavior or daily routines. Rehabilitation can support the development of alternative viewing and sensory strategies, while assistive technology may help people obtain information through available channels. Their value is evaluated by whether they improve functional activities such as reading, communication, navigation, or routine task completion.
It links changes in visual perception with changes in action, communication, and routine behavior. Studying this relationship can show how people reorganize performance when central detail is unavailable, including shifts toward eccentric viewing or nonvisual cues. Findings contribute to research on perception and behavior while also informing assessment, rehabilitation, and the design of assistive technologies.