Three-dimensional computer-automated threshold Amsler grid test
نویسندگان
چکیده
منابع مشابه
Three-dimensional computer-automated threshold Amsler grid test.
We describe a novel method for testing a visual field that employs a computer monitor with displays of varying contrast that permits unprecedented resolution and characterization of the structure of scotomas in three dimensions. Patients are placed in front of a touch-sensitive computer screen at a fixed distance. With one eye covered, they focus on a central fixation marker and trace with thei...
متن کاملCharacterizing ethambutol-induced optic neuropathy with a 3D computer-automated threshold Amsler grid test.
metastases into consideration, palliative surgery to preserve vision in the only eye was performed. The lateral mid-facial approach included osteotomy of the lateral orbital wall and the zygoma. Upon opening the periorbit, the brown tumour infiltrating the muscle was visible. The optic nerve and its nutritive vessels were completely preserved. The lateral rectus tendon was then severed through ...
متن کاملDistinguishing wet from dry age-related macular degeneration using three-dimensional computer-automated threshold Amsler grid testing.
BACKGROUND/AIMS With the increased efficacy of current therapy for wet age-related macular degeneration (AMD), better ways to detect wet AMD are needed. This study was designed to test the ability of three-dimensional contrast threshold Amsler grid (3D-CTAG) testing to distinguish wet AMD from dry AMD. METHODS Conventional paper Amsler grid and 3D-CTAG tests were performed in 90 eyes: 63 with...
متن کاملNovel 3 D Computerized Threshold Amsler Grid Test
Purpose: To introduce a novel 3D computerized threshold Amsler grid test, developed by Fink and Sadun, that allows for a novel characterization of the structure of visual field defects in three dimensions (see http://www.wfbabcom5.com/wf335.htm). Methods: With one eye covered, patients are placed in front of a computer monitor displaying an Amsler grid. While focusing on a varying central fixat...
متن کاملNovel 3D computer-automated threshold Amsler grid visual field testing of scotomas in patients with glaucoma.
PURPOSE Three-dimensional (3D) computer-automated threshold Amsler grid testing was used to identify and characterize scotomas typical of glaucoma. METHODS The 3D test exhibits a grid on a computer screen at a preselected grayscale and angular resolution, and allows patients to trace those areas on the grid that are missing in their visual field using a touch screen. Eleven eyes in patients w...
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ژورنال
عنوان ژورنال: Journal of Biomedical Optics
سال: 2004
ISSN: 1083-3668
DOI: 10.1117/1.1625952