Four-flanged polypropylene optic piercing technique for scleral fixation of multifocal intraocular lens

• Type of Material: Article
• Authors: Youngsub Eom, Emory University; Eunheh Koh, Augusta University; Seul Ki Yang, Yonsei University; Soo Kim, BNeye Clinic; Sungtae Yi, BNeye Clinic; Hyun Sun Jeon, Seoul National University; Seong-Jae Kim, Gyeongsang National University; Jason So, Great Lakes Eye Care; Jong Suk Song, Korea University; David L. Cooke, Michigan State University
• Language: English
• Date: 2023-09-26
• Publisher: Springer Nature
• Publication Version: Final Published Version
• Copyright Statement: © The Author(s) 2023
• License: Creative Commons Attribution 4.0 International
• Final Published Version (URL): https://doi.org/10.1186%2Fs12886-023-03133-7
• Title of Journal or Parent Work: BMC Ophthalmology
• Volume: 23
• Start Page: 392
• Grant/Funding Information: This work was supported by the SNUBH Research Fund [grant numbers 13-2020-007], by a TRC Research Grant of the Korea University Medicine and Korea Institute of Science and Technology (K2107901), by Korea University Ansan Hospital grant, by Korea University grants (K1625491, K1722121, K1811051, K1913161, and K2010921), by the Korea Medical Device Development Fund grant funded by the Korea government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health & Welfare, the Ministry of Food and Drug Safety) (Project Number: 9991007583, KMDF_PR_20200901_0296), by Korea Environment Industry & Technology Institute (KEITI) through Technology Development Project for Safety Management of Household Chemical Products, funded by Korea Ministry of Environment (MOE) (2020002960007, NTIS-1485017544), by the Technology Development Program (S3127902) funded by the Ministry of SMEs and Startups(MSS, Korea), and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (NRF-2021R1F1A1062017).
• Keywords: Flanged; Scleral fixation; Optic piercing
• Research Categories: Health Sciences, Opthamology

Abstract

Background To evaluate the feasibility of creating flanges using an optic piercing technique with a 6 − 0 polypropylene monofilament for scleral fixation of dislocated one-piece diffractive multifocal intraocular lenses (IOLs). Study Design Experimental study and case series. Subjects Optical bench test and eyes with IOL dislocation. Methods Two separate 6 − 0 polypropylenes were penetrated twice at the opposite peripheral optic of the TECNIS Synergy IOL (Johnson & Johnson Vision). The root mean square of the modulation transfer function (MTFRMS), at between + 1.00 and − 4.00 D of defocus, was measured in the TECNIS Synergy IOL both with and without optic piercing in the optical bench study. This case series included three eyes from two patients who underwent scleral-fixation of multifocal IOLs using the four-flanged polypropylene optic piercing technique. The postoperative corrected distance visual acuity (CDVA) at 4 m, the uncorrected near visual acuity (UNVA) at 40 cm, and IOL centration were evaluated. Results The optical bench test showed no differences in MTFRMS values measured in the TECNIS Synergy IOL, either with or without optic piercing at all defocuses. In all three case series, the postoperative CDVA at 4 m was 20/20 and UNVA at 40 cm was J1. Postoperative anterior segment photographs showed good centration of IOLs in all cases. Conclusion The four-flanged polypropylene optic piercing technique for multifocal IOL scleral fixation can provide excellent clinical outcomes and IOL stability after surgery without diminishing the performance of the multifocal IOLs.