functional vision


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functional vision

The processing and use of visual information in the performance of visually related tasks, e.g., reading, driving, or recognizing individuals at a distance or in a crowd.
See also: vision
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The model standardizes the nomenclature and organizes a process to systematically integrate assessment of the organ-level impairment (visual function) and person-level dysfunction (functional vision).
While a low resolution proves to be insufficient to provide functional vision in real world cases, high resolution would create difficulties in information integration in the brain.
Finished in brushed stainless steel with a choice of glass and fixings, they provide an attractive solution to functional vision requirements.
The change restored functional vision. The sixth patient, who was nearly blind in one eye from a chemical burn, recovered 20/200 vision in that eye, a level at which a person can make out the "E" at the top of the eye chart from 20 feet.
She had a stroke in September and lost most of her functional vision. We are now arranging testing to determine the extent of the stroke.
A community-based probability sample of 363 homeless individuals was interviewed and examined for four study conditions (high blood pressure, functional vision impairment, skin/leg/foot problems, and tuberculosis skin test positivity).
Functional vision loss can happen either because of the biological action of the eye to direct light or because of indirect glare caused by reflections from other objects.
Functional vision assessments have also been developed to assess performance of children with visual impairments in educational settings (Barraga & Collins, 1979; Collins & Barraga, 1980; Daugherty & Moran, 1982; Knowlton, 1987; Knowlton, 1988; Knowlton & Normandin, 1987; Knowlton & Woo, 1989; Rathgeber, 1981).
The individualized instruction might include use of functional vision, sensory training, concept development, electronic travel aid usage, low- vision optical and non-optical device training, pre-cane and cane instruction for indoor and outdoor travel, and specialized travel needs related to urban, rural, and inclement weather environments.
Director and low vision practitioner at Optima Low Vision Services, Nicholas Collins, said: "The NoIR range allows me to reduce glare for my low vision patients and maximise their functional vision. Not only can a carefully selected option address the glare, it can also lead to functional improvements in my patients' visual performance in terms of acuity, contrast sensitivity, and improved mobility.
is a specialty health sciences company that develops, formulates and distributes condition-specific medical foods, with an initial medical food product that addresses a depleted macular protective pigment, a known risk factor for age-related macular degeneration ("AMD"), and a significant component of functional vision performance.
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