The Impact Of Cataract Surgery On Lamina Cribrosa Characteristics In Glaucoma
Published 2024 - 42nd Congress of the ESCRS
Reference: PO993 | Type: Free paper | DOI: 10.82333/xv8p-jv83
Authors: Seray Sahin* 1 , Mine Esen Baris 1 , Suzan Guven 1
1Ophthalmology,Ege University Faculty of Medicine,Izmir,Türkiye
Purpose
To evaluate the impact of cataract surgery on anatomical features of lamina cribrosa in eyes with primary angle-closure glaucoma and primary open angle glaucoma.
Setting
Retrospective study including 50 patients at Ege University.
Methods
Primary angle-closure glaucoma (PACG) and primary open-angle glaucoma (POAG) patients with no history of glaucoma surgery and underwent cataract surgery during follow up period were included in this study. Ophthalmological examination findings including visual acuity (VA), intraocular pressure (IOP), cup-to-disc ratio, retinal nerve fiber layer thickness, and the number of antiglaucoma drugs used were recorded. Lamina cribrosa depth (LCD) and lamina cribrosa thickness (LCT) were measured from the images obtained with Swept-Source Optical Coherence Tomography (SS-OCT) in the preoperative and postoperative 5th month. The effect of cataract surgery on LCD and LCT was examined in both groups.
Results
A total of 50 eyes of 50 patients were included (25 eyes in PACG, 25 eyes in POAG). Mean age was 66±9.04 years and 72±7.15 years in PACG and POAG, respectively(p=0.012). There was no statistical difference between the groups in terms of VA and IOP in the preoperative period. The decrease in IOP was 3.9 mmHg and 1.8 mmHg in PACG and POAG, at about 5 months after surgery(p<0.001). In PACG, LCD was 392.4±81.3 μm and 418.3±104.9 μm in the postoperative and preoperative periods, and in POAG it was 422.2±129.1 μm and 428.4±130 μm significantly decreased in the postoperative in both groups(p=0.002). However, the decrease in LCD was more remarkable in PACG. No significant difference was observed in LCT with surgery in both groups(p=0.447; p=0.06).
Conclusions
LCD was found to be decreased after cataract surgery in both PACG and POAG. The significant IOP decrease observed in PACG and POAG with cataract surgery might explain this finding. However, the fact that the decrease in IOP was more remarkable in PACG revealed that the LCD also decreased more than in POAG.