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    New laser system simplifies astigmatism correction

    State-of-the-art software increases efficiency, accuracy

     

    “Once the diagnostics data are imported, all the surgeon has to do is press a button and the laser does the rest. However, there is also the option to change any of the parameters on the fly,” Dr. Jackson said.

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    Over time, surgeons can tweak the nomogram using their own data. The software for the LENSAR helps with that task as well because it captures all of the information needed, he added.

    “Trust the nomogram you start with for the first 50 eyes, and then when you decide to personalize it, change one variable at a time,” Dr. Jackson advised.

    When creating their own nomogram, surgeons also need to calculate their average surgically-induced astigmatism for the right and left eyes. A program developed by Warren Hill, MD, is helpful in that regard (www.sia-calculator.com).

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    Dr. Jackson also highlighted the value of the LENSAR laser’s Scheimpflug imaging systems that allow for dynamic scanning of the cornea and give real-time pachymetric information at the time of femtosecond astigmatic incision creation.

    “Corneal hydration is dynamic, and the cornea may become dessicated during the procedure. Astigmatic incisions are usually made at 90% depth, and if the placement is based on a single preoperative reading, the cuts can go too deep and perforate,” Dr. Jackson said. “With dynamic imaging, there is much less chance of perforation and an increased likelihood they will be made at the true intended depth.”

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