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The visual field test is a subjective measure of central and peripheral vision, or “side vision,” and is used by your doctor to diagnose, determine the severity of, and monitor your glaucoma. The most common visual field test uses a light spot that is repeatedly presented in different areas of your peripheral vision.
The visual field test is a crucial part of glaucoma diagnosis, and is repeated periodically to determine if the disease is stable or getting worse. What is the Purpose of the Visual Field Test? Glaucoma is a disease that initially affects your peripheral (side) vision.
Visual Field Examination. In glaucoma testing a visual field test is performed to measure peripheral (side) vision or visual field to determine if there is damage from glaucoma. One may have glaucoma and not be aware of it. In most individuals, there is no sudden change, which signals either the onset or progression of glaucoma.
The following are uses of visual field testing: Screening for glaucoma: Peripheral vision loss is often an early and subtle sign of glaucoma. Screening and testing for lid droop (ptosis). Testing for toxicity from certain medications... Measuring the extent of retinal diseases, such as retinitis ...
Advanced Glaucoma. According to the Hodapp, Parrish, and Anderson visual field classification system, one of the criteria for advanced glaucoma is if the VF has any points within the central five degrees with a sensitivity less than or equal to 0dB, or if both hemifields have depressed points with sensitivity less than 15dB within...
Visual field test. In a perfect world, then, a glaucoma patient would have matching upper rim loss in the nerve head and lower field defects. When this happens, as it often does, the doctor can be confident that the finding is believable and should be taken as evidence for glaucoma damage. But, in a number of studies,...