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    Experience with a second-generation ICRS

    Take-home: A new double-arc intrastromal corneal ring segment may help to improve visual outcomes and rehabilitate the physiologic optical surface by remodelling the cornea

    At a glance:
    -       ICRS help to decrease irregular astigmatism and corneal steepening
    -       ICRS also play an important role in regularising the corneal surface, thus rescuing optical function and enhancing uncorrected and best corrected visual acuity
    -       A new double-arc ICRS may be suitable for many types and severities of keratoconus; studies are been developed to define the ring parameters for best results in these cases
    -       Preliminary findings from a study with the second-generation Keraring show that the device reduced astigmatism and Kmax as early as 7 days postoperative

    Keratoconus patients and their surgeons have several alternative treatments available to manage a condition that varies in severity, age incidence, presentation and evolution. Management options include special contact lens adaptation, collagen corneal crosslinking, intrastromal corneal ring segments (ICRS), toric phakic intraocular lenses and other techniques still under investigation. These treatments can be combined and tailored according to the patient’s individual needs.
    ICRS improve visual acuity by decreasing irregular astigmatism and reducing corneal steepening. They represent a particularly appealing option for both surgeons and patients because the surgery involved is minimally invasive, and they can be removed or repositioned if necessary.1 The accuracy of the femtosecond laser provides the precision needed for the attempted tunnel depth, as well as the ring centration and location, which manual techniques could not give. Such technology represents an important landmark in ICRS implant surgery because it assures results as planned with a significant decrease in complication rates.

    The second-generation ICRS

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