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Effective near add power for multifocal IOL based on patient axial length, Keratometry.

With this tool you can calculate predicted near or intermediate add power from a multifocal IOL based on multifocal IOL lens plane add power, patient Keratometry reading, axial length and anterior chamber depth (ACD). You will need to enter Haigis a1, a1, and a2 constants to get the predicted lens add power at the corneal or spectacle plane. The tool is based on a fixed vertex distance of 12mm.


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