The New ALCON® Online Toric IOL Calculator
Incorporating the Barrett Toric Algorithm
We’ve updated the ALCON® Online Toric IOL Calculator with optimized refractive outcomes in mind.1-3
The Barrett Toric Algorithm
The new ALCON® Online Toric IOL Calculator uses the Barrett Toric Algorithm, which is designed to provide the most accurate preoperative prediction of residual astigmatism.1,2
Theoretically accounts for posterior corneal astigmatism
Calculates patient-specific effective lens position
Performs calculations for the full line of AcrySof® Toric IOL models in the selected family
Recommends the IOL with the lowest predicted residual astigmatism*
Designed to improve refractive predictability by using a centroid value for SIA4
Click Here for a How to Instructional Video.
*IOL recommendation based on lowest amount of residual refractive astigmatism (irrespective of WTR/ATR axis flipping), calculated from axial length, IOL SEQ, vertex and net average corneal refractive power.
1. Abulafia A, Barrett GD, Kleinmann G, et al. Prediction of refractive outcome with toric intraocular lens implants. J Cataract Refract Surg. 2015;41(5):936-944.
2. Abulafia A, Hill WE, Franchina M, Barrett GD. Comparison of methods to predict residual astigmatism after intraocular lens implantation. J Refract Surg. 2015;31(10):699-707.
3. Koch DD, Ali SF, Weikert MP, Shirayama M, Jenkins R, Wang L. Contribution of posterior corneal astigmatism to total corneal astigmatism. J Cataract Refract Surg.
4. Alpins N, Barrett GD, Hansen MS, Berdahl JP, Hardten DR, Holladay JT. Innovative toric IOL calculators and how to use them: Barrett Toric Calculator. Cataract Refract Surg Today Europe. May 2015 supplement.
©2016 Novartis      7/16      GL‐TOR‐16‐MK‐2755