OCULUS Pentacam Interpretation Manual page 183

25 Orthokeratology, general screening
On day 28 the patient complained of fluctuations in his visual acuity during the day. Thereupon
he was examined in the morning after wearing the lens over night and in the late afternoon.
Examination with the Pentacam® using the Compare 2 Exams display confirmed that the effect of
the ortho-K lens was reversed during the day, and so it was decided to fit the patient with a more
effective ortho-K lens (Figure 223).
Figure 223: Compare 2 Exams in the morning and evening at the same day
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