NEUROLOGY
SURGERY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Visual acuity is tested for both near and far.
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Visual acuity is tested for both near (14 inchesaway) and distance (20 feet away) vision and performed on each eye separately with a standardized Snellen chart for distance and a Rosenbaum pocket screener for near vision.
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Patients are cautioned to avoid squeezing the eye-lids, holding the breath, or performing a Valsalva maneuver, as these may result in abnormally increased IOP.
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The Amsler grid is a test often used for patients with macular problems, such as macular degeneration.
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Detailed explanation-1: -Patient should not hold breath during tonometry or have tight collar around neck. This can lead to overestimation of IOP. Patients are often unable to keep the eyes open without blinking, in which case you must gently hold open the lids with one hand.
Detailed explanation-2: -A point of emphasis among all professionals performing tonometry must be the proper use of topical anesthesia to minimize patient discomfort for methods including Tono-pen and GAT. Avoid any tangential movement across the cornea during tonometric measurement to prevent corneal abrasions.
Detailed explanation-3: -Before the Goldmann tonometry test, your eye doctor will put numbing eye drops in your eye so that you don’t feel anything touching it. Once your eye is numb, your doctor may touch a small strip of paper that contains orange dye to the surface of your eye to stain it. This helps increase the accuracy of the test.
Detailed explanation-4: -Tonometry is a diagnostic test that measures your intraocular pressure (IOP), or the pressure inside your eye. Tonometry can help your healthcare provider determine if you’re at risk for glaucoma.