Welch Allyn RETeval-DR, Directions For Use Manual

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Device testing options
When running a test, you may be presented with choices described below.
Option Description
Cancel Ends the test without saving results
Next Proceeds to the next step in the protocol
Restart Returns to the beginning of the current eye, discarding any
partial results accumulated for that eye
Skip or Skip eye Skips the eye displayed for testing
Test each eye
The RETeval-DR device is designed to measure the patient’s right eye first. The default
is to test both eyes. If you only want to measure a patient’s left eye, use the
Skip
button
to proceed past the right eye screen without testing the patient. By using the skip button
you can test only the right eye or only the left eye.
Note Patients should not talk during the test to minimize muscle-generated
signal interference.
1. Ask the patient to cover the selected eye with the palm of their hand.
This improves their focus on the red light in the ganzfeld and opens their eyelids
wider to make the pupil more visible.
2. Connect the lead to the sensor strip below the patient’s right eye, and then select
Next .
If the Next button is not present, the electrical connection to the patient is poor or
the device is not connected properly to the electrode. See “Troubleshooting” for
suggestions to resolve this issue.
3. Instruct the patient to open their eye as wide as possible and look at the red fixation
light in the device.
4. Press the device against the patient's face, positioning the device so that the
patient’s pupil is inside the large green circle.
5. Swivel the device to minimize gaps between the eyecup and the patient's face in
order to reduce the amount of ambient light reaching the eye.
6. Press the joystick to select Start Test after the device has properly located the pupil.
This is shown on the display as a circle with a red crosshair.
If the device erroneously indicates something else as the pupil, reposition the device
and ensure that the eyelids are sufficiently open until the pupil is properly identified.
If Start Test is not highlighted, go to “Troubleshooting” for suggestions to resolve
this issue.
Directions for use Perform a test 27