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01.12.2024 | Original Paper

Influence of anterior chamber depth and vault on anterior chamber angle morphology after phakic posterior chamber intraocular lens implantation

verfasst von: Angel Sánchez-Trancón, Santiago Cerpa Manito, Oscar Torrado Sierra, António Manuel Baptista, Pedro Miguel Serra

Erschienen in: International Ophthalmology | Ausgabe 1/2024

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Abstract

Purpose

This study aims to investigate the influence of anterior chamber depth (ACD) and vault on the anterior chamber angle (ACA) morphology in myopic individuals implanted with posterior chamber phakic intraocular lenses.

Methods

This retrospective case series involved 231 eyes receiving a 13.2-mm implantable collamer lens (ICL). Preoperative anterior chamber anatomy was assessed using anterior segment optical coherence tomography (AS-OCT) and optical tomography, while postoperative evaluation employed AS-OCT. ACA morphology was characterized pre- and postoperatively through trabecular iris angle (TIA₇₅₀), ACA distance opening (AOD₇₅₀) and trabecular iris space area (TISA₇₅₀). The influence of ACD and vault was examined by categorizing the sample into ACD (shallow, average and deep) and vault (low, optimal and high) groups.

Results

Preoperative ACA morphology varied based on ACD, with shallower ACDs exhibiting narrower TIA₇₅₀, smaller AOD₇₅₀ and TISA₇₅₀. ICL implantation induced greater ACA narrowing more in the deep ACD group (TIA₇₅₀ = 20.1 degrees; AOD₇₅₀ = 0.82 mm and TISA₇₅₀ = 0.44 mm²) compared to the shallow ACD group (TIA₇₅₀ = 15.2 degrees; AOD₇₅₀ = 0.44 mm and TISA₇₅₀ = 0.21 mm²). Postoperatively, deeper ACDs showed larger ACAs. Increasing vault magnitude led to increased ACA narrowing, with the low vault group exhibiting smaller closure (TIA₇₅₀ = 14.3 degrees; AOD₇₅₀ = 0.56 mm and TISA₇₅₀ = 0.29 mm²) compared to the high vault group (TIA₇₅₀ = 20.8 degrees; AOD₇₅₀ = 0.73 mm and TISA₇₅₀ = 0.36 mm²). The magnitude of ACA narrowing associated with the vault had a consistent effect across different ACD groups.

Conclusions

Posterior chamber intraocular lens implantation results in ACA narrowing, the extent of which is contingent upon preoperative anterior chamber and ACA morphology, with additional influence from vault magnitude.

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Titel: Influence of anterior chamber depth and vault on anterior chamber angle morphology after phakic posterior chamber intraocular lens implantation
verfasst von: Angel Sánchez-Trancón
Santiago Cerpa Manito
Oscar Torrado Sierra
António Manuel Baptista
Pedro Miguel Serra
Publikationsdatum: 01.12.2024
Verlag: Springer Netherlands
Erschienen in: International Ophthalmology / Ausgabe 1/2024
Print ISSN: 0165-5701
Elektronische ISSN: 1573-2630
DOI: https://doi.org/10.1007/s10792-024-02924-1

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Influence of anterior chamber depth and vault on anterior chamber angle morphology after phakic posterior chamber intraocular lens implantation

Abstract

Purpose

Methods

Results

Conclusions

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Die Highlights vom Kongress des American College of Cardiology 2024

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Abstract

Purpose

Methods

Results

Conclusions

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