Back to Basics: Unusual cases alter accuracy of IOL power calculations
For average eyes, IOL power estimation calculations are reasonably accurate because the assumptions that are made by the formulae all hold true: The anterior chamber is an average depth, the corneal curvature and axial length are accurately measured by our machines, and the future position of the IOL is accurately predicted. However, there are some clinical situations in which the IOL calculation is not as accurate, and we can end up with a refractive surprise.
The surgeon should be aware of a patient’s history, review the biometric information in detail and recheck calculations as needed.
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