Impacts of Implantable Collamer Lens V4c Placement on Angle Measurements Made by Optical Coherence Tomography: Two-Year Follow-up

Fernández‐Vigo, José Ignacio; Macarro-Merino, Ana; Fernández‐Vigo, Cristina; Fernández‐Vigo, José Ángel; De‐Pablo‐Gómez‐de‐Liaño, Lucía; Fernández-Pérez, Cristina; García‐Feijoó, Julián

doi:10.1016/j.ajo.2017.06.018

Cited by 38 publications

(38 citation statements)

References 30 publications

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“…IOP also recovered to a normal level at 24 h postoperative. In 2 prospective studies published in 2016 [17] and 2017 [11], ACA was measured 1 month after V4c ICL implantation and found to have been narrowed by 34-42% and 39-45%, respectively. In those studies, the ACA at 1 month postoperative was more open than the early ACA at 1 h postoperative in our study.…”

Section: Discussionmentioning

confidence: 99%

The Relationship between Anterior Chamber Angle and Intraocular Pressure Early after V4c Implantable Collamer Lens Implantation

Chen

Sun

et al. 2020

Journal of Ophthalmology

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Purpose. To confirm the relationship between anterior chamber angle (ACA) and intraocular pressure (IOP) early after V4c implantable collamer lens (ICL) implantation. Methods. Patients were assigned to two groups: (1) right eyes (control group) and (2) left eyes (experimental group), with miosis conducted immediately after ICL implantation in the left eyes. IOP, angle opening distance (AOD), trabecular-iris angle (TIA), and pupil diameter (PD) were compared between two groups at postoperative hours 1, 2, and 24. The relationship between ACA, PD, and IOP was analyzed by multiple linear regression. Result. Thirty-six eyes of 18 patients were enrolled. The prevalence of ocular hypertension (OHT, defined as IOP ≥ 21 mmHg) was 61.11% and 16.67% in the right and left eyes, respectively, (χ2 = 7.481, p=0.006). At postoperative hours 1 and 2, IOP and PD were significantly higher p<0.001 in the right eyes, and TIA and AOD were significantly lower p<0.05 in the right eyes than in the left eyes. There was no significant difference at 24 h postoperative in these parameters. After the right eye ICL implantation, the changes of AOD 500 and PD were both linearly correlated with postoperative IOP change (β = −23.707 and 1.731, respectively; p = 0.013 and 0.002, respectively). Conclusion. The ACA was significantly narrowed immediately after V4c ICL implantation. There was a negative linear correlation between ACA and early IOP and a positive linear correlation between PD and early IOP. We recommend the use of intracameral miotics immediately after V4c ICL implantation to reduce the incidence of IOP spikes.

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Section: Discussionmentioning

confidence: 99%

The Relationship between Anterior Chamber Angle and Intraocular Pressure Early after V4c Implantable Collamer Lens Implantation

Chen

Sun

et al. 2020

Journal of Ophthalmology

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“…Both posterior chamber and iris-fixed PIOLs seem satisfactory options to treat high myopia [ 1 – 4 , 10 , 23 – 25 ], with no differences in efficacy or safety detected in a recent meta-analysis. [ 26 ] Our findings point to different AH flow behaviour and different WSS produced by this flow on the endothelium and crystalline lens depending on the type of lens implanted.…”

Section: Discussionmentioning

confidence: 99%

“…Iridocorneal angle width was set at 30 degrees [ 10 ]. For this we had to modify the angle using the software to adjust it to the high vault.…”

Section: Methodsmentioning

confidence: 99%

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Computational simulation of aqueous humour dynamics in the presence of a posterior-chamber versus iris-fixed phakic intraocular lens

et al. 2018

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PurposeTo compare aqueous humour (AH) dynamics in the presence of a precrystalline (Implantable Collamer Lens®; ICL) or iris-fixed (Artiflex®) phakic intraocular lens (PIOL).MethodsBy computational fluid dynamics simulation, AH flow was modelled through a peripheral iridotomy (PI) or central lens hole (both 360 μm) in the presence of an Artiflex or ICL lens, respectively. The impacts of AH flow were then determined in terms of wall shear stress (WSS) produced on the endothelium or crystalline lens. Effects were also modelled for different scenarios of pupil diameter (PD 3.5 or 5.5 mm), ICL vault (100, 350, 800 μm) and number of Artiflex iridotomies (1 or 2) and location (12 or 6 o’clock).ResultsFor a PD of 3.5 mm, AH volumes flowing from the posterior to the anterior chamber were 37.6% of total flow through the lens hole (ICL) and 84.2% through PI (Artiflex). For an enlarged PD (5.5 mm), corresponding values were 10.3% and 81.9% respectively, so PI constitutes a very efficient way of evacuating AH. Central endothelial WSS in Pa was lower for the large vault ICL and the Artiflex (1−03 and 1.1−03 respectively) compared to the PIOL-free eye (1.6−03). Crystalline lens WSS was highest for the lowest vault ICL (1−04).ConclusionsAH flow varied according to the presence of a precrystalline or iris-fixed intraocular lens. Endothelial WSS was lower for an implanted ICL with large vault and Artiflex than in the PIOL-free eye, while highest crystalline WSS was recorded for the lowest vault ICL.

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“…However, the 2-year follow-up of these patients evidenced angle closure stabilization (AOD at month 369 was ±170 vs. 354 ± 152 at 2 years; p = 1,0). 60 TIA correlated with the lens vault 2 years after surgery (R = −0.609; p < 0.001). In addition, iris-trabecular contact was observed in 8 of the 54 studied eyes in the first month after ICL implant which did not progress at 2 years after said implant.…”

Section: Assessment Of Angle Opening Modificationsmentioning

confidence: 97%

Update on the usefulness of optical coherence tomography in assessing the iridocorneal angle

Kudsieh

Fernández‐Vigo

Vila-Arteaga

et al. 2019

Archivos de la Sociedad Española de Oftalmología (English Editi

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Impacts of Implantable Collamer Lens V4c Placement on Angle Measurements Made by Optical Coherence Tomography: Two-Year Follow-up

Cited by 38 publications

References 30 publications

The Relationship between Anterior Chamber Angle and Intraocular Pressure Early after V4c Implantable Collamer Lens Implantation

The Relationship between Anterior Chamber Angle and Intraocular Pressure Early after V4c Implantable Collamer Lens Implantation

Computational simulation of aqueous humour dynamics in the presence of a posterior-chamber versus iris-fixed phakic intraocular lens

Update on the usefulness of optical coherence tomography in assessing the iridocorneal angle

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