Variability and Errors of Manually Digitized Goldmann Visual Fields
نویسندگان
چکیده
منابع مشابه
Test-retest, within-visit variability of Goldmann visual fields in retinitis pigmentosa.
PURPOSE Reliable outcome measures are needed to estimate changes in peripheral vision during future treatment clinical trials for retinal degeneration patients. The authors examined the short-term variability of Goldmann visual field (GVF) results converted to retinal areas in retinitis pigmentosa (RP) subjects. METHODS Two within-visit GVFs were obtained from one eye each of 37 RP subjects w...
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PURPOSE To determine diagnostic accuracy of kinetic visual field assessment by Octopus 900 perimetry compared with Goldmann perimetry. METHODS Prospective cross section evaluation of 40 control subjects with full visual fields and 50 patients with known visual field loss. Comparison of test duration and area measurement of isopters for Octopus 3, 5, and 10°/sec stimulus speeds. Comparison of ...
متن کاملAction video game players and deaf observers have larger Goldmann visual fields
We used Goldmann kinetic perimetry to compare how training and congenital auditory deprivation may affect the size of the visual field. We measured the ability of action video game players and deaf observers to detect small moving lights at various locations in the central (around 30 degrees from fixation) and peripheral (around 60 degrees ) visual fields. Experiment 1 found that 10 habitual vi...
متن کاملEffects of refractive errors on visual evoked magnetic fields
BACKGROUND The latency and amplitude of visual evoked cortical responses are known to be affected by refractive states, suggesting that they may be used as an objective index of refractive errors. In order to establish an easy and reliable method for this purpose, we herein examined the effects of refractive errors on visual evoked magnetic fields (VEFs). METHODS Binocular VEFs following the ...
متن کاملPrevalence of Calibration Errors in Goldmann Applanation Tonometers
PURPOSE To determine the prevalence of calibration errors in Goldmann applanation tonometers at Farabi Eye Hospital. METHODS This cross-sectional study was performed on all tonometers in use at Farabi Eye Hospital. All Haag-Streit Goldmann applanation tonometers were checked according to the manufacturer's method by two independent observers and by a third observer in case of mismatched resul...
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ژورنال
عنوان ژورنال: Optometry and Vision Science
سال: 2016
ISSN: 1538-9235,1040-5488
DOI: 10.1097/opx.0000000000000869