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Device operation
EN 20_070_0009I v1.5
•
Explain to the customer that measurements with the i.Profiler
plus
are
contact-free.
•
Inform the customer about the measurement process before starting
the measurement (a red light will appear).
•
Look for foreign objects on the tear film (such as eyelashes). Have the
customer blink once or twice before starting the measurement
process.
CAUTION - HAZARD DUE TO MEASURING ERRORS
Wearing soft or hard contact lenses can change the surface geometry of
the cornea and thus the optical properties of the eye.
Therefore, during topography and wavefront measurements for soft lens
wearers, a waiting period of at least two weeks must be observed from
when the lens is removed until the time of the measurement.
If the customer wears hard lenses, the waiting period from the time the
lens is removed to the time of the measurement must be at least three
weeks. Two measurements of central keratometry and two
measurements of manifest refraction must be completed at an interval
of at least one week. These may not deviate from one another by more
than 0.5 dpt for each meridian. The Placido disc images must be normal.
