Frequency doubling technology and Octopus visual field
نویسندگان
چکیده
منابع مشابه
Alzheimer's Disease: Screening Biomarkers Using Frequency Doubling Technology Visual Field
This study was to investigate the feasibility of frequency doubling technology (FDT) visual field testing in Alzheimer's disease (AD) in order to identify early biomarkers of AD in patients already diagnosed with AD and compare the findings to participants not having Alzheimer's disease. This biomarker would be useful in a battery of tests for the early identification of those with AD. It was n...
متن کاملFrequency doubling technology perimetry for detection of glaucomatous visual field loss.
PURPOSE To evaluate the ability of frequency doubling technology perimetry to detect early, moderate, and advanced glaucomatous visual field loss. METHODS In a prospective study, frequency doubling technology perimetry (C-20 full threshold) was performed in the right eye of 254 normal control subjects and 230 patients with early (n = 85), moderate (n = 114), or advanced (n = 31) glaucomatous ...
متن کاملTest-retest variability in visual field testing using frequency doubling technology.
PURPOSE To quantify the magnitude of test-retest variability (TRV) for normal subjects in serial visual fields (VF) using the frequency doubling technology (FDT) instrument. METHODS Twenty-one healthy adults, aged 23 to 60 years, underwent four serial FDT VF tests, using the full-threshold C-20 program of the Zeiss-Humphrey FDT analyzer, on one randomly chosen eye. The VF tests were spaced 2 ...
متن کاملThe learning effect in visual field testing of healthy subjects using frequency doubling technology.
PURPOSE To evaluate the presence, duration and magnitude of a learning effect in serial visual field (VF) testing, using the commercially available frequency doubling technology (FDT) instrument. PATIENTS AND METHODS 21 healthy adults with no prior VF experience underwent 6 serial VF tests, using the full-threshold C-20 program of the Zeiss-Humphrey FDT analyzer, on one randomly chosen eye. T...
متن کاملFrequency-doubling technology and parasol cells.
Swanson et al. have reported an excellent study of the responses of macaque retinal ganglion cells (RGCs) to Goldmann size III stimuli and contrast-modulated grating stimuli. They estimated the contrast gain of the initial rising phase of the contrast response function of the cells. From the physiology shown, the extracellular recorded RGCs are parasol and midget RGCs and are referred to in ter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Ophthalmologica Scandinavica
سال: 2000
ISSN: 1395-3907
DOI: 10.1111/j.1600-0420.2000.tb01084.x