Analyse von corneo-skleralen und biometrischen Messwerten als Prädiktoren für Sklerallinsenparameter: eine systematische Übersicht

Purpose. In the latest years, the interest in scleral lenses is progressively increasing among practitioners and patients from all around the world. An optimal lens fit is necessary to ensure patient comfort and visual quality. However, it is not straightforward to estimate the appropriate scleral lens parameters for a particular patient. This review paper aims to summarize the current state of knowledge in predictors of scleral lens parameters based on corneo-scleral shape. Material and Methods. Literature was reviewed from PubMed. A total of 33 articles were specifically selected for the current study. Results. Even though not all available corneo-scleral meas- urements may be helpful in the fitting experience, the re- fractive state of the cornea, corneal flattest and steepest keratometry, scleral toricity, and axial length have proven to influence the scleral lens parameters and, consequently, the quality of scleral lens fit. Conclusion. The usefulness of corneal, scleral, and corneo- scleral measures is reviewed and critically evaluated. A special effort was made to highlight the clinical implications of the findings. Keywords Corneal topography, scleral profile, profilometry, myopia progression, axial length, contact lens fitting