Clinical Interventions in Aging (Jul 2022)

Classifications of Qualitative Characteristics on Angle Configurations via Ultrasound Biomicroscopy in Acute Primary Angle Closure

  • Wang F,
  • Wang D,
  • Wang L

Journal volume & issue
Vol. Volume 17
pp. 1113 – 1125

Abstract

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Fenglei Wang, Dabo Wang, Ling Wang Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, People’s Republic of ChinaCorrespondence: Ling Wang, Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao University, No. 16 Jiangsu Road, Shinan District, Qingdao, 266003, People’s Republic of China, Tel +86-18661806679, Email [email protected]: To study the classifications of qualitative characteristics on the angle configurations in the acute primary angle closure (APAC) and fellow eyes by ultrasound biomicroscopy (UBM).Methods: A total of 131 patients (262 eyes) were researched retrospectively. The qualitative parameters from UBM images were classified into iris form (IF), ciliary body configuration (CBC), basal iris thickness (BIT), iris convexity (IC), iris insert (II), iris angulation (IA), ciliary body size (CBS) and ciliary body position (CBP). Comparative analyses between the APAC (case group) and fellow (control group) eyes were performed.Results: There were significant differences in IF, CBC, IC, II, CBS, CBP between the case group and control group in all quadrants (P< 0.001). The IA of the case group and control group presented significant difference in all quadrants (P=0.001). However, there was not a significant difference in BIT between the case group and control group in all quadrants (P=0.495). The case group had fewer parallelogram-like and mushroom-like and more cone-like and hook-like CBCs than the control group (P< 0.001).Conclusion: Multiple ciliary body configurations can influence the stability of the lens and the anatomic configuration of the anterior chamber angle indirectly. New qualitative classification system of UBM may be more intuitionistic and refined to reflect the angle configurations to help clinical practice.Keywords: acute primary angle closure, qualitative parameter, angle configuration, ultrasound biomicroscopy

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