The Reliability and Validity of a Handheld Relative Afferent Pupillary Tester in Diagnosing Optic Neuropathy
نویسندگان
چکیده
منابع مشابه
Predictive value of visual evoked potentials, relative afferent pupillary defect, and orbital fractures in patients with traumatic optic neuropathy
BACKGROUND The purpose of this study was to determine the predictive value of flash visual-evoked potentials (VEP), relative afferent pupillary defect, and presence of orbital fractures in patients with traumatic optic neuropathy. METHODS A prospective study was conducted in 15 patients with indirect traumatic optic neuropathy. All patients underwent a thorough ophthalmic examination. Initial...
متن کاملQuantification of optic nerve axon loss associated with a relative afferent pupillary defect in the monkey.
OBJECTIVE To quantify the amount of optic nerve axonal loss associated with the presence of a mild relative afferent pupillary defect (RAPD) in an experimental monkey model. METHODS The right macula of 5 rhesus monkeys (Macaca mulatta) was treated with concentrically enlarging diode laser burns until an RAPD was detected using a transilluminator light and measured with neutral density filters...
متن کاملOrigin of the relative afferent pupillary defect in optic tract lesions.
OBJECTIVE To determine the percent decussation of pupil input fibers in humans and to explain the size and range of the log unit relative afferent pupillary defect (RAPD) in patients with optic tract lesions. DESIGN Experimental study. PARTICIPANTS AND CONTROLS Five patients with a unilateral optic tract lesion. METHODS The pupil response from light stimulation of the nasal hemifield, tem...
متن کاملThe afferent pupillary defect in acute optic neuritis.
Twenty-two patients with acute optic neuritis were studied by the techniques of infrared pupillometry and visual evoked responses (VER) to pattern reversal. A relative afferent pupillary defect was found in all cases and the magnitude of this defect was found to be related to the amplitude, but not to the latency, of the VER. During follow-up the afferent defect was found to remain persistently...
متن کاملHow to test for a relative afferent pupillary defect (RAPD)
Light source The ‘swinging light test’ is used to detect a relative afferent pupil defect (RAPD): a means of detecting differences between the two eyes in how they respond to a light shone in one eye at a time. The test can be very useful for detecting unilateral or asymmetrical disease of the retina or optic nerve (but only optic nerve disease that occurs in front of the optic chiasm). The phy...
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ژورنال
عنوان ژورنال: Journal of Ophthalmology & Clinical Research
سال: 2017
ISSN: 2378-8887
DOI: 10.24966/ocr-8887/100032