OCULUS Mesotest II, Инструкция по эксплуатации

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8 Before Conducting the Examination
20 / 86 Instruction Manual Mesotest II (G/62800/0715/en)
8 Before Conducting the Examination
8.1 Prepare the Unit for Routine Operation
To start the Mesotest II for daily operation, you must:
 Check the connections, sec. 7.3, page 17
 Check whether the viewer is dirty

If impurities are found: Clean the viewer, also refer to sec. 13.2,
page 69 .

Disinfect the viewer enclosure after every examination and the
housing whenever necessary,
sec. 13.3, page 69 .
8.2 Prepare the Patient for the Examination
Prepare the patient for the examination, as follows:

Check to be sure that any adaptation disorder has been resolved,
sec. 8.2.1, page 21 .

Check the patient’s glasses for damage or dirt.

Explain the procedure and the optotypes to the patient. You can
show the patient the following figure:
A ring with a gap in it is used as the test symbol (opto-
type) The gap can appear in eight different positions.
Tell the patient where the gap is.

Top (12 o’clock)

Top right (1 to 2 o’clock)

Right (3 o’clock)

Bottom right (4 to 5 o’clock)

Bottom (6 o’clock)

Bottom left (7 to 8 o’clock)

Left (9 o’clock)

Top left (10 to 11 o’clock)
Fig. 8-1: Example: Landolt rings explained