OCULUS Pentacam Interpretation Manual page 141

Figure 166: Cataract Pre-OP Display moderate keratoconus
Total HOA (1.575 μm) is high, and SA (-1.355 μm) is too low. Conventional spherical IOL is
recommended after obtaining the patient's informed consent regarding the effects of corneal
irregular astigmatism on quality of vision.
Figure 167: Cataract Pre-OP Display post LASIK
Total HOA (0.360 μm) shows mild irregular astigmatism, and SA (0.403 μm) is relatively high but
within the normal range. A monofocal aspherical IOL is recommended and should be calculated
using special IOL formulas for post-LASIK.
18 Corneal tomographic analysis is essential before
cataract surgery - 4 steps in screening candidates
for premium IOLs
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