Distributions of crystalline lens tilt and decentration and associated factors in age-related cataract
| Autor: | Yizhi Liu, Wei Wang, Jingmin Xu, Zhenzhen Liu, Lixia Luo, Enen Zhang, Xiaoyun Chen, Xiaoxun Gu, Lanhua Wang, Guangming Jin |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
medicine.medical_treatment Lens equator Cataract Extraction Cataract Article law.invention Lens thickness law Ophthalmology Lens Crystalline Humans Medicine Lenses Intraocular Related factors business.industry Cataract surgery eye diseases Sensory Systems Lens (optics) Cross-Sectional Studies Tilt (optics) Ophthalmologic examination Surgery sense organs business Age-related cataract |
| Zdroj: | Journal of Cataract and Refractive Surgery |
| ISSN: | 1873-4502 0886-3350 |
| DOI: | 10.1097/j.jcrs.0000000000000631 |
| Popis: | Approximately 10% of cataract patients have a tilt of 7 degrees or greater and decentration of 0.4 mm or greater. Axial length, front curvature radius, lens thickness, and age correlate with tilt and decentration. Purpose: To investigate the characteristics and factors associated with crystalline lens tilt and decentration measured by CASIA2 anterior segment optical coherence tomography. Setting: Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China. Design: Cross-sectional study. Methods: 1097 eyes of 1097 patients who planned to undergo cataract surgery were enrolled. All patients underwent a general ophthalmologic examination. Lens thickness (LT), front curvature radius (FCR), back curvature radius, lens equator diameter (LED), tilt, and decentration of preoperative crystalline lenses were measured by CASIA2. Univariate and multivariate regression analyses were performed to evaluate the relationships between the tilt and decentration of crystalline lens with related factors. Results: The natural crystalline lenses showed a mean tilt of 5.16 degrees toward the inferotemporal direction and a mean decentration of 0.22 mm toward the temporal direction. Of the total 1097 eyes, 119 eyes (10.85%) had a tilt greater than 7 degrees, and 89 eyes (8.11%) had a decentration more than 0.4 mm. Multivariate regression analysis showed that larger decentration, thicker LT, shorter axial length (AL), and FCR were associated with greater lens tilt (P < .001, P = .007, P = .006, and P = .003, respectively). In addition, greater tilt, older and thinner LT were correlated with larger decentration (all P < .001). Conclusions: Preoperative crystalline lens had a certain degree of tilt and decentration in age-related cataract. The greater tilt of the crystalline lens was, the larger decentration of it was. In addition, AL, FCR, LT, and age also correlated with tilt and decentration. |
| Databáze: | OpenAIRE |
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