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Visual field - Definition



Definition


The visual field is the expanse of space that the eye sees when it is fixed and looking straight ahead. The eye then transmits the information it receives from the visual field to the brain, taking their shape, colors, and volume into account. The visual field covers approximately 180 ° in an individual whose vision is normal. The visual field can be studied by an ophthalmologist for each eye individually. When the visual field is altered, it can affect the central or peripheral field and some areas are no longer visible to the eye; it may be an area not seen in the middle of the visual field or spots in the field of vision (called scotomas). The visual field is not reduced by disorders directly affecting the eye or others which compromise the optic nerve.
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