Page 25 - Demo
P. 25
How to use Cassini for IOL planning
Cassini parameters to consider for premium IOLs
l + Spherical aberrations < 0.6
l Vertical Comma < 0.4
l Pupil centre off-set (KAPPA) < 0.5
l Higher-order aberrations <0.9
l Surface asymmetry index < 1.6
l Surface regularity index < 1.7
l Total Corneal Astigmatism >/= 0.75DC l Adjust Keratometric SimK with TCA delta
Confirm quality of ocular surface Confirm regularity per zone
Keratoconus alarming parameters
l Surface asymmetry index > 1.6
l Surface regularity index > 1.7
l Post- Astigmatism > 0.90DC = suspicious
Investigate tangential and elevation map carefully
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