Alcon Toric Calculator

Alcon Toric Calculator

Keratometry (K1 & K2 in D)

Please enter valid keratometry values (e.g., 44.0/45.0).

Steep Axis (degrees)

Axis must be between 0 and 180.

Surgically Induced Astigmatism (D)

SIA must be a non-negative number.

Incision Location (degrees)

Incision location must be between 0 and 180.

Recommended Toric IOL

Cylinder Power: D

Axis: °

Residual Astigmatism: D

Formula Explanation

The Alcon Toric Calculator uses the steep axis and keratometry to determine the required cylinder power, adjusting for surgically induced astigmatism (SIA) and incision location. The result is the recommended toric IOL cylinder and alignment axis.