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000000Ć1150Ć839 IOLMaster 11.02.2004
Irregularities of the corneal surface (scars)
Scars and local irregularities on the corneal surface impair the imaging
quality of the measuring marks. Depending on the expansion and
location of these irregularities erroneous measurements may arise.
Fig. 60Ą Local corneal scar impairing measuring points at 3 and 5 o'clock
Try to position the measuring mark beside, above or below the scar by
slightly displacing the instrument relative to the eye. Then, release the
measurement. In such cases, it is advisable to repeat the measurement
several times. Depending on the degree of irregularity fluctuating or
erroneous results may occur.
Fig. 61Ą Condition after keratoplasty
In Fig. 61, it is impossible to take a keratometer measurement using the
IOLMaster.
Cause
Solution
Tips for keratometer measurement
