The Flieringa Scleral Fixation Ring (13mm) is a specialized ophthalmic tool designed to securely anchor intraocular lenses (IOLs) or other ocular implants to the sclera (the white part of the eye), especially in cases where the natural support structures, such as the lens capsule or zonules, are inadequate or damaged. The 13mm size is typically used for larger eyes or when a larger fixation ring is needed to provide stable anchorage for an IOL or other implants.