The correlation analysis of corneal width and anterior chamber angle parameters on anterior chamber angle composition
Objective To observe the changes in corneal width and anterior chamber angle parameters in cataract patients before and after cataract surgery and analyze the relationships among them.Methods A retrospective clinical-study.A total of 43 eyes of 34 patients(69.03±6.61 years old)were enrolled from January 2021 to March 2022 in Han Dan City Eye Hospital.The anterior chamber width(ACW),central anterior chamber depth(CACD),pupil diameter(PD),trabecular iris angle(TIA),angle opening distance(AOD)and trabecular-ciliary processes distance(TCPD)of all eyes were measured by ophthalmic ultrasound biomicroscopy(UBM)before and at 3 months after cataract surgery.These pa-rameters were analyzed by paired t-test,and the pearson correlation and linear regression analysis were applied in the cor-relation analysis of anterior chamber width with other parameters.Results The differences of ACW,CACD,TIA,AOD and TCPD were statistically significant at 3 months after cataract surgery compared to those before cataract surgery.The dif-ference between PD before and at 3 months after cataract surgery was not statistically significant.The ACW had no associa-tion with CACD,TIA or AOD,but had a negative association with TCPD before cataract surgery.The unilinear regression equation:ACW=13.044-1.959(TCPD),adjusted R2=0.113.Conclusions In the change of anterior chamber angle,the corneal width and the ciliary process position were not completely independent in the composition of anterior chamber angle.They together tended to form a relatively stable but dynamic structural relationship in the composition of anterior chamber angle.