Abstract
Patients should have been evaluated and deemed appropriate for such surgical intervention that aims to improve refraction and visual outcomes without halting ectasia progression. It is indicated in corneal ectatic disorders that impair visual acuity and affect activities of daily living. Proper calculation of the intrastromal corneal ring segment (ICRS) thickness, length, and type is required. All ICRS types currently available on the market (Intacs, Addition Technology, Inc., and Keraring, Mediphacos Ltda.) have similar outcomes. It is recommended to use the manufacturer-defined nomogram for the adequate selection based on refraction (sphere and cylinder) and asphericity of 5–7 mm. Patients should have been educated about the risks and benefits of the procedure, including alternatives.
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Alió, J.L., Renna, A. (2017). Insertion of Intrastromal Corneal Ring Segments (ICRS), Femtosecond Laser Assisted. In: Rosenberg, E., Nattis, A., Nattis, R. (eds) Operative Dictations in Ophthalmology. Springer, Cham. https://doi.org/10.1007/978-3-319-45495-5_17
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DOI: https://doi.org/10.1007/978-3-319-45495-5_17
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