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<article><div id="d-article"><div class="page-info"><div class="page-title"><a name="start" id="start">
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</a><h1 class="with-also" itemprop="name">Visual field</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>The visual field refers to the total area in which objects can be seen in the side (peripheral) vision as you focus your eyes on a central point.</p><p>This article describes the test that measures your visual field.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>How the Test is Performed</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p><strong>Confrontation visual field exam.</strong> This is a quick and basic check of the visual field. The health care provider sits directly in front of you. You will cover one eye, and stare straight ahead with the other. You will be asked to tell when you can see the examiner's hand.</p><p><strong>Tangent screen or Goldmann field exam.</strong> You will sit about 3 feet (90 centimeters) away from a flat, black fabric screen with a target in the center. You will be asked to stare at the center target and let the examiner know when you can see an object that moves into your side vision. The object is usually a pin or bead on the end of a black stick that is moved by the examiner. This exam creates a map of your central 30 degrees of vision. This exam is usually used to detect brain or nerve (neurologic) problems.</p><p><strong>Goldmann perimetry and Automated perimetry.</strong> For either test, you sit in front of a concave dome and stare at a target in the middle. You press a button when you see small flashes of light in your peripheral vision. With Goldmann testing, the flashes are controlled and mapped out by the examiner. With automated testing, a computer controls the flashes and mapping. Your responses help determine if you have a defect in your visual field. Both tests are often used to track conditions that may worsen over time.</p><p>Your provider will discuss with you the type of visual field testing to be done.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>How to Prepare for the Test</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>No special preparation is necessary.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>How the Test will Feel</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>There is no discomfort with visual field testing.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Why the Test is Performed</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>This eye exam will show whether you have a loss of vision anywhere in your visual field. The pattern of vision loss will help your provider diagnose the cause.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Normal Results</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>The peripheral vision is normal.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>What Abnormal Results Mean</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Abnormal results may be due to diseases or <a test="test" href="./002311.htm">central nervous system</a> (CNS) disorders, such as tumors that damage or press on (compress) the parts of the brain that deal with vision.</p><p>Other diseases that may affect the visual field of the eye include:</p><ul><li><a test="test" href="./001214.htm">Diabetes</a></li><li><a test="test" href="./001620.htm">Glaucoma</a> (increased eye pressure)</li><li>High blood pressure</li><li><a test="test" href="./001000.htm">Age-related macular degeneration</a> (eye disorder that slowly destroys sharp, central vision)</li><li><a test="test" href="./000737.htm">Multiple sclerosis</a> (disorder that affects the CNS)</li><li><a test="test" href="./001024.htm">Optic nerve glioma</a> (tumor of the optic nerve)</li><li><a test="test" href="./000356.htm">Hyperthyroidism</a> (overactive thyroid)</li><li>Pituitary gland disorders</li><li><a test="test" href="./001027.htm">Retinal detachment</a> (separation of the retina in the back of the eye from its supporting layers)</li><li><a test="test" href="./000726.htm">Stroke</a></li><li><a test="test" href="./000448.htm">Temporal arteritis</a> (inflammation and damage to the arteries that supply blood to the scalp and other parts of the head) </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Risks</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>The test has no risks.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Perimetry; Tangent screen exam; Automated perimetry exam; Goldmann visual field exam; Humphrey visual field exam</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/1094t.jpg" alt="Eye" title="Eye" class="side-img"/><a href="../imagepages/1094.htm">Eye</a></li>
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/1143t.jpg" alt="Visual field test" title="Visual field test" class="side-img"/><a href="../imagepages/1143.htm">Visual field test</a></li>
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</ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>References</h2></div><div class="section-button"><button type="submit" aria-controls="section-Ref" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Ref"><p>Chuck RS, Dunn SP, Flaxel CJ; American Academy of Ophthalmology Preferred Practice Pattern Committee, et al. Comprehensive adult medical eye evaluation preferred practice pattern. <em>Ophthalmology</em>. 2021;128(1):1-29. <a href="https://doi.org/10.1016/j.ophtha.2020.10.024" target="_blank">doi.org/10.1016/j.ophtha.2020.10.024</a>. Published November 12, 2020.</p><p>Idrees S, Sangave AA, Ramchandran RS. Visual fields in retinal disease. In: Sadda SR, Sarraf D, Freund KB, Hinton DR, Schachat AP, Wilkinson CP, eds. <em>Ryan's Retina</em>. 7th ed. Philadelphia, PA: Elsevier; 2023:chap 13.</p><p>Olitsky SE, Marsh JD. Examination of the eye. In: Kliegman RM, St. Geme JW, Blum NJ, Shah SS, Tasker RC, Wilson KM, eds. <em>Nelson Textbook of Pediatrics</em>. 21st ed. Philadelphia, PA: Elsevier; 2020:chap 637.</p><p>Schroeder R, Lind JT, Budenz DL. Visual fields. In: Yanoff M, Duker JS, eds. <em>Ophthalmology</em>. 6th ed. Philadelphia, PA: Elsevier; 2023:chap 10.5.</p></div></div></section>
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<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 2/12/2023</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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