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Abstract #106815 Published in IGR 23-3
Anterior Segment Parameter Changes after Cataract Surgery in Open-Angle and Angle-Closure Eyes: A Prospective Study
Yang K; Liang Z; Lv K; Ma Y; Hou X; Wu HJournal of clinical medicine 2022; 12:
BACKGROUND: To investigate the anterior segment parameters before and after cataract surgery in open-angle eyes and different subtypes of primary angle-closure glaucoma (PACG) eyes and to further explore the potential relationship between the anterior rotation of the ciliary process and crystalline lens. METHODS: An observational, prospective study was performed on 66 patients who had cataract surgery including 22 chronic PACG patients, 22 acute PACG patients, and 22 open-angle cataract patients. Anterior segment parameters including the trabecular-ciliary process distance, ciliary process area, trabecular-ciliary angle (TCA), maximum ciliary body thickness (CBTmax), and so on, were measured using ultrasound biomicroscopy preoperatively and 3 months postoperatively. RESULTS: After the surgery, there were significant increases in TCA ( < 0.001) and CBTmax ( < 0.05) in all three groups, while there was no significant change in the trabecular-ciliary process distance ( > 0.05) in all three groups. No significant difference in the changes of ciliary process area, TCA, and CBTmax ( > 0.05) pre- and postoperatively among the three groups were identified. CONCLUSIONS: Extractions of crystalline lenses played similar roles in terms of decreasing the anterior rotation of ciliary processes in open-angle eyes and angle-closure eyes. A natural anatomical abnormality may be a more important factor in the anterior rotation of ciliary processes in PACG patients.
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