Unfolding characteristics of a new hydrophobic acrylic intraocular lens, and possible association with complications in triple procedures

Iwase, Takeshi; Tanaka, Nobushige

doi:10.1111/j.1442-9071.2007.01565.x

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…Iwase and Tanaka reported that incomplete unfolding of the hydrophobic acrylic Hoya AF-I caused intraoperative rotation of the IOL in the capsular bag. The tendency of the unfolding and rotation can result in optical rotation and potential contact with the endothelium or inverted implantation (the implant positioned upside down) [ 16 , 17 ]. Decreased implantation time could reduce the risk of complications arising from incomplete IOL unfolding.…”

Section: Discussionmentioning

confidence: 99%

Video analysis of optic-haptic-interaction during hydrophobic acrylic intraocular lens implantation using preloaded injectors

Yan,

Borkenstein,

Khoramnia

et al. 2023

BMC Ophthalmol

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Objective To compare the optic-haptic interaction of different hydrophobic acrylic IOLs after using six preloaded injectors. Methods We reviewed the video-recordings of procedures on a total of 388 eyes that underwent phacoemulsification and intraocular lens (IOL) implantation. For six preloaded injectors: multiSert (Hoya Surgical Optics) [System 1], TECNIS Simplicity (Johnson & Johnson Vision) [System 2], TECNIS iTec (Johnson & Johnson Vision) [System 3], AutonoMe (Alcon, Laboratories) [System 4], Bluesert (Carl Zeiss Meditec) [System 5], and Prosert (OphthalmoPro GmbH) [System 6], we noted in each case the time of IOL delivery and made a descriptive observation of IOL insertion and optic-haptic-interaction. Results We defined standard haptic behavior where the haptics emerged “folded” from the injector and quickly recovered their pre-implantation appearance. The incidence where the leading haptic emerged in a deformed way for System 1 was 20%, System 2: 19%, System 3: 14%, System 4: 56%, System 5: 24% and System 6: 5%. For trailing haptic deformed behavior, the incidence was 36%, 6%, 4%, 8%, 18% and 2%, respectively for Systems 1 to 6. Optic-haptic adhesion occurred in 2% of cases for System 1, 44% for System 2, 52% for System 3, 48% for System 4, and 11% for System 6 (P < 0.05). Adhesion was not found with System 5. Conclusions We observed different deformed behavior for leading and trailing haptics in the six preloaded systems, some systems had as much as 52% optic-haptic adhesion.

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Section: Discussionmentioning

confidence: 99%

Video analysis of optic-haptic-interaction during hydrophobic acrylic intraocular lens implantation using preloaded injectors

Yan,

Borkenstein,

Khoramnia

et al. 2023

BMC Ophthalmol

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show abstract

“…Further, extended unfurling time prevents effective IOL fixation, leading to rotation of the IOL and even dislocation into the vitreous cavity. 3 Predictable unfurling is vital during the implantation of toric IOLs, when precise alignment of the optic is needed to restore optimal vision. 4 , 5 Thus, parameters surrounding IOL unfurling represent an important clinical interest to minimize surgical time and operative costs while improving clinical outcomes.…”

Section: Introductionmentioning

confidence: 99%

Intraocular Lens Unfurling Time Exponentially Decays with Increased Solution Temperature

Rocher,

Mukherjee,

Pitingolo

et al. 2023

OPTH

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Purpose Intraocular lens (IOL) unfurling can be a rate-limiting step in cataract surgery, limiting operative efficiency. Furthermore, inefficient unfurling has important implications for clinical outcomes. We examine the effects of solution temperature on IOL unfurling time using three in vitro models of the ocular environment. Methods IOLs were injected into a 6-well plate filled with balanced salt solution (BSS), dispersive ophthalmic viscoelastic device (OVD), or cohesive OVD. Experiments were also performed in a plastic eye filled with dispersive or cohesive OVD. IOL unfurling time was recorded against the temperature of the respective solution. Results IOL unfurling time decayed exponentially as solution temperature increased in all experiments, including the BSS-filled 6-well plate, the OVD-filled 6-well plate, and the OVD-filled plastic eye. IOLs failed to unfurl within 10 min at 10°C, below the glass transition temperature of the tested IOLs. Increasing solution temperature from 20°C to 30°C decreases IOL unfurling by greater than 2 min. Further heating to 40°C did not significantly decrease IOL unfurling time. Conclusion Increased solution temperature rapidly decreases IOL unfurling time in vitro. IOLs do not unfurl within a clinically acceptable timeframe at or below their glass transition temperature. Increased BSS and/or OVD temperature may be a potential method to decrease IOL unfurling time in cataract surgery. However, future research is needed to elucidate potential consequences of warmed BSS and/or OVD on post-operative outcomes. This study demonstrates the potential for temperature regulation to decrease cataract surgery operative time and provides preliminary evidence to justify future clinical validation of this relationship.

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Posterior Vault Distance of Ciliary Sulcus–Implanted Three-piece Intraocular Lenses According to Ciliary Sulcus Diameter

Eom

Hwang

et al. 2017

American Journal of Ophthalmology

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Unfolding characteristics of a new hydrophobic acrylic intraocular lens, and possible association with complications in triple procedures

Cited by 8 publications

References 11 publications

Video analysis of optic-haptic-interaction during hydrophobic acrylic intraocular lens implantation using preloaded injectors

Video analysis of optic-haptic-interaction during hydrophobic acrylic intraocular lens implantation using preloaded injectors

Intraocular Lens Unfurling Time Exponentially Decays with Increased Solution Temperature

Posterior Vault Distance of Ciliary Sulcus–Implanted Three-piece Intraocular Lenses According to Ciliary Sulcus Diameter

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