Eyeworld

AUGUST 2020 | EYEWORLD | 23 Contact Abulafia: adi.abulafia@gmail.com Holladay: holladay@docholladay.com Hill: hill@doctor-hill.com Koch: dkoch@bcm.edu Wang: liw@bcm.edu by Liz Hillman Editorial Co-Director viation (SD), minimal prediction error (Min), maximal prediction error (Max), mean ab- solute prediction error (MAE), and median absolute prediction error (MedAE)." Lens constant optimization, for example, will be im- proved with such an update, Dr. Hill said, because with the di- opter being a distance measure, being able to set refractive data for various lane lengths improves accuracy. According to Dr. Koch, the IOL Calcula- tion Formula Analyzer allows surgeons to evalu- ate their refractive outcomes with various IOL calculation formulas. "This is invaluable for evaluating their own outcomes, and it should greatly help surgeons as they seek to improve their results," he said. The Corneal SIA Tool, Dr. Koch contin- ued, gives surgeons the ability to look at their own corneal SIA values, facilitating their under- standing and modification of outcomes. "With these tools, users just need to enter raw data into the spreadsheet," Dr. Wang said. "Data analyses will be performed and results will be presented in figures/tables automatically. These figures can then be copied into slides for presentation or papers for publication." As Dr. Koch put it, "all three spreadsheets are ideal for clinical studies." These tools can be found at https://ascrs. org/tools. A SCRS released updated and new IOL calcu- lation tools earlier this summer. The updated Astigmatism Double Angle Plot Tool and new IOL Calculation Formula Analyzer and Corneal SIA Tool were developed by Adi Abulafia, MD, with feedback from Warren Hill, MD, Douglas Koch, MD, Li Wang, MD, PhD, and Jack Holladay, MD. "These free, accessible online tools were developed for surgeons and researchers around the world in order to facilitate tracking and analysis of refractive outcomes of patients following cataract surgery and refractive lens exchange," Dr. Abulafia said. The Astigmatism Double Angle Plot Tool now allows for refraction data to be set at var- ious lane lengths, Dr. Koch said, with the goal of allowing surgeons to adjust values to the 6-meter lane length, which is preferred in most studies. Dr. Abulafia said the representation of data is now available at the corneal plane and spectacle plane. "It also allows the user to adjust the scale of each ring on the double angle plots of the preoperative corneal and postoperative refrac- tive astigmatism, hence, allowing more flexibility for data representation," he said. "In addition, a new histogram of the predicted postoperative SEQ numerical errors is available, including data of the percentages of eyes with prediction errors less than or equal to 0.25 D, 0.50 D, and 1 D, mean numerical error (MNE), standard de- New, updated IOL tools on ASCRS website About the doctors Adi Abulafia, MD Shaare Zedek Medical Center Jerusalem, Israel Jack Holladay, MD Clinical professor of ophthalmology Baylor College of Medicine Houston, Texas Warren Hill, MD East Valley Ophthalmology Mesa, Arizona Douglas Koch, MD Professor, Allen, Mosbacher, and Law Chair in Ophthalmology Baylor College of Medicine Houston, Texas Li Wang, MD, PhD Associate professor of ophthalmology Baylor College of Medicine Houston, Texas Relevant disclosures Abulafia: None Holladay: None Hill: None Koch: None Wang: None "These free, accessible online tools were developed for surgeons and researchers around the world in order to facilitate tracking and analysis of refractive outcomes of patients following cataract surgery and refractive lens exchange." —Adi Abulafia, MD

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