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

Autor: Sánchez-Trancón A; Ophthalmology Clinic Vista Sánchez Trancón, Room 15, Calle La Violeta, 06005, Badajoz, Spain., Manito SC; Ophthalmology Clinic Vista Sánchez Trancón, Room 15, Calle La Violeta, 06005, Badajoz, Spain., Sierra OT; Ophthalmology Clinic Vista Sánchez Trancón, Room 15, Calle La Violeta, 06005, Badajoz, Spain., Baptista AM; Centre of Physics, University of Minho, Braga, Portugal., Serra PM; Ophthalmology Clinic Vista Sánchez Trancón, Room 15, Calle La Violeta, 06005, Badajoz, Spain. pedro.serra@vistasancheztrancon.com.
Jazyk: angličtina
Zdroj: International ophthalmology [Int Ophthalmol] 2024 Feb 06; Vol. 44 (1), pp. 15. Date of Electronic Publication: 2024 Feb 06.
DOI: 10.1007/s10792-024-02924-1
Abstrakt: 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 (TIA 750 ), ACA distance opening (AOD 750 ) and trabecular iris space area (TISA 750 ). 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 TIA 750 , smaller AOD 750 and TISA 750 . ICL implantation induced greater ACA narrowing more in the deep ACD group (TIA 750  = 20.1 degrees; AOD 750  = 0.82 mm and TISA 750  = 0.44 mm 2 ) compared to the shallow ACD group (TIA 750  = 15.2 degrees; AOD 750  = 0.44 mm and TISA 750  = 0.21 mm 2 ). Postoperatively, deeper ACDs showed larger ACAs. Increasing vault magnitude led to increased ACA narrowing, with the low vault group exhibiting smaller closure (TIA 750  = 14.3 degrees; AOD 750  = 0.56 mm and TISA 750  = 0.29 mm 2 ) compared to the high vault group (TIA 750  = 20.8 degrees; AOD 750  = 0.73 mm and TISA 750  = 0.36 mm 2 ). 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.
(© 2024. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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