139
Figure 166: Cataract Pre-OP Display moderate keratoconus
Figure 167: Cataract Pre-OP Display post LASIK
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.
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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