Welch Allyn RETeval-DR, Directions For Use Manual

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Two periods of the electrical response, as measured from the Sensor strip, to a 32 Td
∙
s
(left) and 16 Td
∙
s (right) white flickering stimulus are shown. The light flashes stimulating
the retina occurred at time = 0 ms and near time = 35 ms. The dotted lines indicate the
measurement points for the peak-to-peak amplitude and implicit time (time-to-peak).
The pupil size as a function of time is shown for the 4 and 32 Td
∙
s white flickering
stimuli. The stimuli start at time = 0. The dotted lines show the extracted pupil diameters
for the two stimuli. The ratio of pupil areas is quantitated in the plot.
Results from a computer or laptop
Results can be transferred to a computer or laptop in PDF format.
The file naming convention for results, patientID_birthdate_testdate.pdf, includes these
parameters.
• Patient ID
• Birth date (yymmdd: year, month, day)
• Test date (yymmddhhmmss: year, month, day, hour, minute, seconds)
With this file naming convention, past patient results sort next to patient's current
results.
The PDF displays:
•
Practice information, specified in Settings
• Patient information, entered during the test
• Date and time of the test
• A description of the stimulus used. Chromaticities are reported in the (x,y)
colorspace from CIE 1931. Brightness is reported in photopic units.
• Patient results
Directions for use Test results 31