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VFT |
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an eye chart test to evaluate your distance vision; a tonometer test, in which a special instrument is used to measure the pressure inside your eye; and a visual field test to measure your side, or peripheral, vision (loss of peripheral vision is a sign of glaucoma). Visual field assessments are demonstrated in photographs of equipment and procedures and with illustrated samples of visual field test results. The results, published in the September issue of Archives of Ophthalmology, show that the HRT offers new diagnostic information, overcoming some of the limitations of current methods, such as the familiar "air puff" test or the visual field test in which the patient looks for white lights projected onto a white screen. |
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