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2. Visibly - Wikipedia

   en.wikipedia.org/wiki/Visibly

   Description. Visibly provides on-line vision tests and generates eyeglasses and contact lens prescriptions for site visitors, delivering these results via email within one day of the completion of the exam. The results of the exam are reviewed by an optometrist, are considered valid prescriptions, and may be used for ordering glasses or ...

3. Visual field test - Wikipedia

   en.wikipedia.org/wiki/Visual_field_test

   28629-4. A visual field test is an eye examination that can detect dysfunction in central and peripheral vision which may be caused by various medical conditions such as glaucoma, stroke, pituitary disease, brain tumours or other neurological deficits. Visual field testing can be performed clinically by keeping the subject's gaze fixed while ...

4. Humphrey visual field analyser - Wikipedia

   en.wikipedia.org/wiki/Humphrey_Visual_Field_Analyser

   Humphrey field analyser ( HFA) is a tool for measuring the human visual field that is commonly used by optometrists, orthoptists and ophthalmologists, particularly for detecting monocular visual field. [1] The results of the analyser identify the type of vision defect. Therefore, it provides information regarding the location of any disease ...

5. Visual field - Wikipedia

   en.wikipedia.org/wiki/Visual_field

   Visual field. The visual field is "that portion of space in which objects are visible at the same moment during steady fixation of the gaze in one direction"; [1] in ophthalmology and neurology the emphasis is mostly on the structure inside the visual field and it is then considered “the field of functional capacity obtained and recorded by ...

6. Useful field of view - Wikipedia

   en.wikipedia.org/wiki/Useful_field_of_view

   Useful field of view. In human vision, the useful field of view (or UFOV) is the visual area from which information can be extracted without eye or head movements. [1] UFOV size generally decreases with age, [2] most likely due to decreases in visual processing speed, reduced perception, and increased susceptibility to distraction.

7. Visual perception - Wikipedia

   en.wikipedia.org/wiki/Visual_perception

   Visual perception is the ability to interpret the surrounding environment through photopic vision (daytime vision), color vision, scotopic vision (night vision), and mesopic vision (twilight vision), using light in the visible spectrum reflected by objects in the environment. This is different from visual acuity, which refers to how clearly a ...