ORIGINAL RESEARCH article
Front. Med.
Sec. Ophthalmology
This article is part of the Research TopicEmerging Mechanisms, Diagnostic Innovations and Global Perspectives in Chronic Ocular DiseasesView all articles
Determinants of Angle Kappa in Cataract Patients
Provisionally accepted
- 1Shenzhen Baoan People's Hospital, Shenzhen, China
- 2Zhujiang Hospital of Southern Medical University, Guangzhou, China
- 3Guangdong Eye Institute, Department of Ophthalmology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
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Purpose: To investigate the determinants of angle kappa in cataract patients. Methods: In this retrospective study we included biometric data in both eyes of 715 cataract patients measured by Lenstar LS-900. The ocular biometrics included angle kappa (X component, Y component, chord mu), iris center (X component, Y component, iris center distance), central corneal thickness (CCT), corneal curvature (CR), anterior chamber depth (ACD), lens thickness (LT), axial length (AL), anterior corneal astigmatism (ACA), white-to-white corneal diameter (WTW), and pupil size (PS). Correlations of angle kappa with other biometrics were evaluated using Spearman’s correlation tests. Determinants of angle kappa were analyzed using generalized estimating equations. Results: Chord mu was significantly correlated to ACD, LT, AL, ACA, WTW, PS, iris center X component, and iris center distance (r = -0.19 to 0.28, all P < 0.05). Determinants of chord mu were ACD (β = -0.05), PS (β = 0.04), and iris center distance (β = 0.17). For the X component of angle kappa, the determinants were ACD (β = 0.10), LT (β = 0.04), AL (β = 0.02), WTW (β = -0.04), PS (β = -0.03), and iris center X component (β = 0.42). For the Y component of angle kappa, the determinants included sex (β = 0.05), PS (β = -0.04), and iris center Y component (β = 0.13). Conclusions: Different determinants of angle kappa were found in this study. Our findings are important for understanding the influencing biometrics of angle kappa.
Keywords: Angle kappa, biometrics, Cataract surgery, determinants, intaocular lens
Received: 16 Oct 2025; Accepted: 03 Dec 2025.
Copyright: © 2025 Jin, Hao, Liu, Geng, Ma, Niu, Cao and Hu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Duanrong Cao
Yijun Hu
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