Journal of cataract and refractive surgery · 2024
Attaining the optimal flange technique for transscleral capsular bag stabilization using iris hooks.
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Schlatter Andreas, Kronschläger Martin, Ruiss Manuel, Bayer Natascha, Blouin Stéphane, Findl Oliver
Аннотация
PURPOSE: To investigate the flange properties of different iris hooks.
SETTING: Vienna Institute for Research in Ocular Surgery (VIROS), Hanusch Hospital, Vienna, Austria.
DESIGN: Laboratory study.
METHODS: The flanging properties of 4 different iris hooks made from polypropylene (PP), elastic polymer (EP), and nylon were investigated with different heating distances and both with and without forceps gripping. The maximum diameter of the flanges was measured, and the shape of the flanges was evaluated.
RESULTS: Although both nylon and EP iris hooks had too small flange diameters for intrascleral fixation, PP iris hooks had a sufficient flange diameter (>330 μm) and mushroom-like shape. Furthermore, in PP hooks, heating distance was directly proportional to flange diameter.
CONCLUSIONS: The findings of this study suggest that only PP iris hooks are suitable for flanged intrascleral fixation, which is off-label, to secure adequate fixation.
SETTING: Vienna Institute for Research in Ocular Surgery (VIROS), Hanusch Hospital, Vienna, Austria.
DESIGN: Laboratory study.
METHODS: The flanging properties of 4 different iris hooks made from polypropylene (PP), elastic polymer (EP), and nylon were investigated with different heating distances and both with and without forceps gripping. The maximum diameter of the flanges was measured, and the shape of the flanges was evaluated.
RESULTS: Although both nylon and EP iris hooks had too small flange diameters for intrascleral fixation, PP iris hooks had a sufficient flange diameter (>330 μm) and mushroom-like shape. Furthermore, in PP hooks, heating distance was directly proportional to flange diameter.
CONCLUSIONS: The findings of this study suggest that only PP iris hooks are suitable for flanged intrascleral fixation, which is off-label, to secure adequate fixation.