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CONTRIBUTION FACTORS OF EFFECTIVE LENS POSITION, TILT, AND DECENTRATION DURING FLANGED SCLERAL FIXATION OF INTRAOCULAR LENS: A Model Eye Study

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Author(s)
Chang-Hyun ParkKun MoonJessica H KimKyu Young ShimJong Hwa Jun
Keimyung Author(s)
Jun, Jong Hwa
Department
Dept. of Ophthalmology (안과학)
Journal Title
Retina
Issued Date
2024
Volume
44
Issue
2
Abstract
Purpose:
The authors aimed to elucidate the factors related to effective lens position, tilt, and decentration of scleral fixed intraocular lenses (IOLs) with a flanged haptic technique in an artificial eye model using anterior segment optical coherence tomography.

Methods:
Two bent 27-gauge needles were passed through a 1.0- or 2.0-mm scleral tunnel, 2.0 mm posterior to the limbus and 180° apart. Both haptics of a three-piece IOL were docked with guide needles and externalized. Factors related to the IOL position were analyzed using anterior segment optical coherence tomography and a stereomicroscope.

Results:
The 1.0-mm scleral tunnel induced a significantly longer effective lens position than the 2.0-mm tunnel and suture fixation ( P < 0.05 and P < 0.01, respectively). Discrepancy in scleral tunnel length induced higher decentration of the optic to the opposite side of the haptic-embedded shorter tunnel and tilt perpendicular to the fixed axis than that in the scleral tunnel of the same length ( P < 0.001 and P < 0.05, respectively). If the scleral fixation points of both haptics are not exactly 180° apart, the IOL may become decentered and tilted ( P < 0.01 and P < 0.05, respectively).

Conclusion:
In the flanged haptic technique, the length, balance, and position of both scleral tunnels determine IOL effective lens position, tilt, and decentration.
Keimyung Author(s)(Kor)
전종화
Publisher
School of Medicine (의과대학)
Type
Article
ISSN
1539-2864
Source
https://journals.lww.com/retinajournal/fulltext/2024/02000/contribution_factors_of_effective_lens_position,.18.aspx
DOI
10.1097/IAE.0000000000003960
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/45567
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Ophthalmology (안과학)
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