The Crescent Sign of Anterior Capsular Tear Detection Using Ultrasound Biomicroscopy

Case Reports in Ophthalmology

卷:17

Case Report

Asaf Achiron¹  Tal Yahalomi²  Duncan Leadbetter³  Kieran Darcy³  Derek Tole³  Omar Elhaddad^3,4 

[1] Ophthalmology Department, Soraski Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel

[2] Department of Ophthalmology, Samson Assuta Ashdod Hospital and the faculty of Health Sciences, Ben-Gurion University of the Negev, Beersheba, Israel

[3] Faculty of Medicine, Alexandria University, Alexandria, Egypt

[4] Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, UK

关键词: Anterior capsule;    Lens;    Ultrasound Biomicroscopy;    Trauma;    Diagnosis;   

DOI  :  10.1159/000552566

 received in 2025-11-30, accepted in 2026-04-27,  发布年份 2026

来源: Karger

【 摘 要 】

AbstractIntroduction: This case report describes a novel imaging sign denoting anterior lenticular capsular tear using ultrasound biomicroscopy (UBM) in a case of trauma with obscured direct visualization. Case Presentation: A 40-year-old intravenous drug user was presented to the emergency department after injuring his right eye with a used hypodermic needle 4 days previously. Slit-lamp examination revealed an intense anterior segment reaction with corneal edema, limiting the view to deeper structures. UBM allowed lens visualization, which demonstrated a crescent hyperechoic anterior subcapsular shadow, which was not present in the fellow eye. As the anterior segment inflammation and corneal edema cleared with topical steroid treatment and antibiotic treatment, the traumatic cataract, posterior synechiae, and lens particles in the anterior chamber became evident. A review of published literature demonstrated a similar sign of crescent hyperechoic anterior subcapsular shadow that has been documented in two previous cases with disrupted anterior capsules and lens-particle glaucoma. Conclusion: UBM can be used for assessing anterior lenticular integrity and may aid in diagnosing lenticular injuries where a direct view is impossible. Lens crescent sign is a UBM finding that suggests lenticular injuries.

【 授权许可】

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© 2026 The Author(s). Published by S. Karger AG, Basel