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COMMISSIONED ARTICLE
Year : 2014  |  Volume : 2  |  Issue : 2  |  Page : 115-123

Ultrasound biomicroscopy: An overview


UBM Institute, Mumbai, Maharashtra, India

Correspondence Address:
Deepak C Bhatt
UBM Institute, A/1 Ganesh Baug, 214 Bhalchandra Road, Matunga, Mumbai- 400 019, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2320-3897.130549

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Ultrasound biomicrosopy (UBM) is a technique used to visualize the anterior segment of the eye using high frequency ultrasound. It uses 35-50 MHz probe which has a resolution of 40 microns and a depth of penetration of 4 mm. UBM is used to study the status of desment's membrane in cases of corneal edema when slit-lamp examination cannot see the desment's clearly. In open angle glaucoma, UBM does not have any significant role. In closed angle glaucoma, UBM helps to rule out occludable versus nonoccludable angles. UBM plays a major role in diagnosis of plateau iris configuration and malignant glaucoma. UBM helps to visualize the tract and bleb in cases of failed trabeculectomy and also helps in ruling out episcleal scarring or tenon's cyst. UBM is the only modality which can easily diagnose pars plannits or cyclitic membranes noninvasively. In cases of unexplained hypotony, UBM helps to diagnose ciliary body atrophy or traction on the ciliary body. In cases of trauma, it helps to rule out angle recession or cyclodialysis cleft. UBM can assess the extent of damage to the zonules in cases of trauma and also sees the integrity of posterior capsule. This article is a short overview and an introduction to the use of UBM in the evaluation of anterior segment pathologies and usefulness in treatment management.


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