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Positioning
3
Tono-Vera Tonometer will automatically measure when properly aligned. It is suggested to practice
measuring with the included Tono-Vera Training Aid.
It is recommended to hold the unit so the Ocu-Dot Probe and Canthus Marks are perpendicular to the
eye. The unit can measure when the probe angle is ±15º from level. The probe tip should be approximately
4-8 mm from the eye. Extend the Flexi-Soft™ Forehead Rest to assist with positioning by rotating the
Flexi-Soft Forehead Rest Adjustment Wheel.
Correct Probe Angle
Incorrect Probe Angle
15°
Approx.
4-8 mm
15°
Device Orientation
Tono-Vera can be rotated a full 360º around the axis of
the Ocu-Dot Probe, as long as the probe is kept parallel
to the ground, within the ±15º probe angle range.
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