Anterior Segment Changes and Refractive Outcomes after Cataract Surgery Combined with Gonioscopy-Assisted Transluminal Trabeculotomy in Open-Angle Glaucoma

Publisher: Galenos Yayınevi Country of Publication: Turkey NLM ID: 101686048 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2149-8709 (Electronic) Linking ISSN: 21498709 NLM ISO Abbreviation: Turk J Ophthalmol Subsets: MEDLINE

Original Publication: Fındıkzade-İstanbul, Türkiye : Galenos Yayınevi, [2015]-

Trabeculectomy* ; Glaucoma, Open-Angle*/complications ; Glaucoma, Open-Angle*/diagnosis ; Glaucoma, Open-Angle*/surgery ; Lenses, Intraocular* ; Cataract*/complications; Humans ; Lens Implantation, Intraocular ; Refraction, Ocular ; Gonioscopy ; Retrospective Studies

Objectives: To compare the accuracy of intraocular lens (IOL) calculation formulas in patients undergoing phacoemulsification combined with gonioscopy-assisted transluminal trabeculotomy (phaco-GATT) and to determine the predictive factors for refractive errors.
Materials and Methods: Fifty-three eyes of 53 patients undergoing phaco-GATT were retrospectively reviewed. The preoperative and postoperative 3-month anterior segment (AS) parameters were measured by Scheimpflug camera. The mean prediction error (PE), mean absolute error (MAE) in the Sanders-Retzlaff-Kraft/theoretical (SRK/T), Barrett- Universal II, Hill-radial basis function (Hill-RBF) and Kane formulas were compared. The influence of biometric parameters on PE were analyzed by correlation analysis.
Results: Postoperatively, there was a statistically significant decrease in axial length (AL) and significant enlargement in anterior chamber depth (ACD), anterior chamber angle (ACA), and anterior chamber volume (p<0.001). The mean PE using SRK/T (-0.08 diopters [D]) was more myopic than in the Barret (0.01 D) and Hill-RBF (0.01 D). The PE closest to zero was in the Kane formula (0.001 D). The Kane formula provided a lower MAE (0.30±0.28 D) than the SRK/T (0.38±0.32 D) and Barrett (0.36±0.30 D) (p<0.001). The MAE in Hill-RBF (0.32±0.28) was comparable with that in Kane (p=0.02). Preoperative AL was significantly associated with PE in all formulas except Kane. Barrett was the only formula that did not have a significant correlation between PE and postoperative ACD and ACA.
Conclusion: The Kane formula may provide higher predictability of the IOL power calculation than the SRK/T and Barrett-Universal II formulas in phaco-GATT surgery, which can cause significant changes in the AS and AL.
Competing Interests: Conflict of Interest: No conflict of interest was declared by the authors.
(©Copyright 2023 by the Turkish Ophthalmological Association / Turkish Journal of Ophthalmology published by Galenos Publishing House.)

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Keywords: Gonioscopy-assisted transluminal trabeculotomy; intraocular lens formula; phacoemulsification; refractive error

Date Created: 20231204 Date Completed: 20231222 Latest Revision: 20240102

20250114

PMC10750090

10.4274/tjo.galenos.2023.36080

38047480