August 2020

ASCRS NEWS

New, updated IOL tools on ASCRS website


by Liz Hillman Editorial Co-Director

“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


ASCRS released updated and new IOL calculation 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 various 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 refractive 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 deviation (SD), minimal prediction error (Min), maximal prediction error (Max), mean absolute prediction error (MAE), and median absolute prediction error (MedAE).”
Lens constant optimization, for example, will be improved with such an update, Dr. Hill said, because with the diopter being a distance measure, being able to set refractive data for various lane lengths improves accuracy.
According to Dr. Koch, the IOL Calculation Formula Analyzer allows surgeons to evaluate 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 continued, gives surgeons the ability to look at their own corneal SIA values, facilitating their understanding 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.

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

Contact

Abulafia: adi.abulafia@gmail.com
Holladay: holladay@docholladay.com
Hill: hill@doctor-hill.com
Koch: dkoch@bcm.edu
Wang: liw@bcm.edu

New, updated IOL tools on ASCRS website New, updated IOL tools on ASCRS website
Ophthalmology News - EyeWorld Magazine
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2020-07-27T11:11:46Z
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