ArticleBMC ophthalmology2024
Dislocation force of scleral flange-fixated intraocular lens haptics.
Article in BMC ophthalmology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Comparative safety and complication profiles of two three-piece intraocular lenses in Yamane technique.International ophthalmology · 2026Article
- Miri 4-points marker: a low-cost marking device for flanged intrascleral intraocular lens fixation with modified Yamane technique.BMC ophthalmology · 2026Article
- Flanged scleral fixation: thermoplastic properties of suture materials and implications for flange geometry.BMC ophthalmology · 2026Article
- Electron microscopic irregularities resulting from postmanufacture modifications to intraocular lenses.Journal of cataract and refractive surgery · 2026Article
- Refractive, visual, and safety outcomes of three surgical techniques for aphakia correction.Journal of cataract and refractive surgery · 2025Article
- Comparison of flange creation in three-piece intraocular lenses between high- and low-temperature cautery.BMC ophthalmology · 2025Article
- Severe intraocular lens tilt after the Yamane technique.Journal of cataract and refractive surgery · 2025Article
- Haptic-Optic Fractures in Yamane Flanged Intrascleral Fixated Lenses: A Case Series.Journal of ophthalmic & vision research · 2025Article
- Comparing dislocation force between a flanged haptics IOL and a harpoon haptics IOL.Scientific reports · 2024Article
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Authors and funding
6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
purposeTo measure the dislocation forces in relation to haptic material, flange size and needle used.
settingHanusch Hospital, Vienna, Austria.
designLaboratory Investigation. METHODS,
main outcome measures30 G (gauge) thin wall and 27 G standard needles were used for a 2 mm tangential scleral tunnel in combination with different PVDF (polyvinylidene fluoride) and PMMA (polymethylmethacrylate haptics). Flanges were created by heating 1 mm of the haptic end, non-forceps assisted in PVDF and forceps assisted in PMMA haptics. The dislocation force was measured in non-preserved cadaver sclera using a tensiometer device.
resultsPVDF flanges achieved were of a mushroom-like shape and PMMA flanges were of a conic shape. For 30 G needle tunnels the dislocation forces for PVDF and PMMA haptic flanges were 1.58 ± 0.68 N (n = 10) and 0.70 ± 0.14 N (n = 9) (p = 0.003) respectively. For 27 G needle tunnels the dislocation forces for PVDF and PMMA haptic flanges were 0.31 ± 0.35 N (n = 3) and 0.0 N (n = 4), respectively. The flange size correlated with the occurring dislocation force in experiments with 30 G needle tunnels (r = 0.92), when flanges were bigger than 384 micrometres.
conclusionsThe highest dislocation forces were found for PVDF haptic flanges and their characteristic mushroom-like shape for 30 G thin wall needle scleral tunnels. Forceps assisted flange creation in PMMA haptics did not compensate the disadvantage of PMMA haptics with their characteristic conic shape flange.
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