gms | German Medical Science

34th Congress of the German Society for Cataract & Refractive Surgeons (GSCRS)

German Society for Cataract & Refractive Surgeons (GSCRS)

13.02. - 15.02.2020, Mainz

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Comparative assessment of the Corneal Incision Enlargement of four preloaded Intraocular Lens Delivery Systems

Meeting Abstract

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  • Thomas Kohnen - Frankfurt a.M.
  • J. Liu - Fort Worth/USA
  • P. Wolfe - Fort Worth/USA
  • V. Hernandez - Fort Worth/USA

Deutschsprachige Gesellschaft für Intraokularlinsen-Implantation, Interventionelle und Refraktive Chirurgie. 34. Kongress der Deutschsprachigen Gesellschaft für Intraokularlinsen-Implantation, interventionelle und refraktive Chirurgie. Mainz, 13.-15.02.2020. Düsseldorf: German Medical Science GMS Publishing House; 2020. Doc20dgii32

doi: 10.3205/20dgii32, urn:nbn:de:0183-20dgii327

Published: June 18, 2020

© 2020 Kohnen et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. See license information at http://creativecommons.org/licenses/by/4.0/.

Outline

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Purpose: To comparatively evaluate the corneal incision enlargement and incision structure of AutonoMe, a new automated preloaded delivery system, to UltraSert, TECNIS iTec (iTec) and HOYA Vivinex™ iSert® (Vivinex) preloaded delivery systems.

Methods: Sixteen (16) preloaded IOLs (20.0 D-21.0 D) per treatment group were delivered into the anterior chamber of human cadaver eyes through a 2.0 mm (Vivinex) or 2.2 mm (AutonoMe, UltraSert, and iTec) incision size. Corneal incision morphology was evaluated using optical coherence tomography (OCT) and incision sizes were measured using ASICO incision gauges before and after IOL delivery. Differences in mean incision enlargement between delivery devices were evaluated using a paired t-test.

Results: AutonoMe (0.29±0.03 mm) and UltraSert (0.29±0.03 mm) had the smallest average incision enlargement compared with iTec (0.31±0.03 mm) and Vivinex (0.36±0.06 mm). Vivinex had the largest corneal incision enlargement and was significantly larger than AutonoMe (p=0.001), UltraSert (p=0.001) and iTec (p=0.002). Representative OCT images of pre- and post-implantation incisions (cross sectional images of cornea) showed more incision gaping, corneal stromal damage and distortion for delivery systems with the largest incision enlargement: Vivinex and iTec.

Conclusions: The new AutonoMe preloaded delivery system protects the corneal incision during IOL implantation and causes smaller incision enlargement and less corneal stromal damage compared to iTec and Vivinex. Further clinical studies are necessary to confirm the effect of incision enlargement on wound healing and post-operative corneal morphology.