New rarebit vision test captures macular deficits hidden to acuity tests
نویسندگان
چکیده
منابع مشابه
New, sensitive window on abnormal spatial vision: rarebit probing
Clinical tests have a poor sensitivity to low to moderate degrees of neuro-visual damage, possibly because their test targets involve numerous receptive fields. A new test used briefly exposed microdots of high contrast. Multiple visual field areas were probed repeatedly, with ever-new microdot positions. Normal subjects responded to a median 96.0% of probes. Patients with different visual fiel...
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Visual acuity (VA) measurement by the use of letter charts is the most frequently used method for testing foveal function. However, since a decimal visual acuity of 1.0, often used as limit for normality, can be achieved with less than two-thirds of the normal number of optic nerve axons, the letter chart test cannot be regarded as sensitive to low-degree damage. The reason why letter charts ar...
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PURPOSE Schültze, in 1866, originally proposed that macular pigment (MP) could improve acuity by reducing the deleterious effects associated with the aberration of short-wave (SW) light. Although proposed well more than a century ago, the hypothesis has never been empirically tested. The authors chose to begin evaluating the acuity hypothesis by measuring MP levels, gap, and hyperacuity in the ...
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ژورنال
عنوان ژورنال: Acta Ophthalmologica
سال: 2015
ISSN: 1755-375X
DOI: 10.1111/aos.12659