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Image quality and interpretation are operator-dependent. Thus, good technique and understanding of the strengths and limitations of the different ultrasonography modalities e.g. A-scan (time-amplitude), B-scan (brightness), doppler and ultrasound biomicroscopy are valuable, especially in complex cases with diagnostic uncertainty. This article discusses the practical applications of ultrasonography in the diagnosis and management of common vitreoretinal emergencies (vitreous haemorrhage, retinal detachment and endophthalmitis) and complications of anterior segment surgery (choroidal effusion, suprachoroidal haemorrhage, malpositioned or dislocated lens).<\/jats:p>","DOI":"10.1177\/11206721261452073","type":"journal-article","created":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T14:29:43Z","timestamp":1779200983000},"page":"1540-1552","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Practical applications of ultrasound B-scan in vitreoretinal conditions: A narrative review"],"prefix":"10.1177","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6163-7927","authenticated-orcid":false,"given":"Antony","family":"Raharja","sequence":"first","affiliation":[{"name":"Moorfields Eye Hospital"},{"name":"Whipps Cross University Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James","family":"Gooch","sequence":"additional","affiliation":[{"name":"Moorfields Eye Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asterios","family":"Diafas","sequence":"additional","affiliation":[{"name":"Moorfields Eye Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hadi","family":"Zambarakji","sequence":"additional","affiliation":[{"name":"Whipps Cross University Hospital"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ben","family":"Kirkpatrick","sequence":"additional","affiliation":[{"name":"Moorfields Eye Hospital"},{"name":"UCL Institute of Ophthalmology"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2026,5,19]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.crad.2003.10.010"},{"key":"e_1_3_3_3_2","first-page":"381","article-title":"B-scan ultrasonography following open globe repair","volume":"28","author":"Andreoli MT","year":"2014","unstructured":"Andreoli MT, Yiu G, Hart L, et al. 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