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DGH 55B-INS-OMENG Rev: 3
4.4
Proper Applanation for Taking A Measurement
Proper applanation is necessary for obtaining an accurate measurement. Proper applanation
occurs when the flat tip of the probe comes into full contact with the cornea perpendicular to the
cornea surface. The user must ensure that pressure against the cornea is minimized.
The diagram below illustrates correct and incorrect alignment of the probe tip to the cornea.
1 and 2: CORRECT: The probe IS perpendicular to the corneal surface.
3 and 4: INCORRECT: The probe IS NOT perpendicular to the corneal surface.
Fig 4.4.1 Correct and Incorrect Applanation
While in
Measurement Mode
, the
Pachmate 4
will automatically take a measurement whenever
the tip of the probe is properly applanated to the cornea.
WARNING:
Moving or realigning the probe tip while it is in contact with the cornea or
applying pressure while measuring the cornea may cause damage to the cornea. When
changing position or alignment of the probe, it is necessary to disengage contact, reorient
and then gently re-applanate.
!