Test, visual field
A test which measures the extent and distribution of the field of vision. The visual field test may be done by a number of methods including what are termed confrontation, tangent screen exam and automated perimetry. Although the test may seem tedious, it is not painful or uncomfortable. Many diseases can adversely affect the visual fields including glaucoma, strokes, high blood pressure (hypertension), diabetes, multiple sclerosis, and overactivity of the thyroid gland (hyperthyroidism). Medications can also affect the visual fields, including antimalaria medicines such as chloroquine/ATABRINE and hydroxychloroquine/PLAQUENIL.

Medical dictionary. 2011.

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  • Field, visual — The entire area that can be seen when the eye is directed forward, including that which is seen with peripheral vision. The visual field can be tested to measure the extent and distribution of the field of vision. The test may be done by a number …   Medical dictionary

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