Glaucoma

Ultrasonic A-scan, B-scan, and ultrasound biomicroscopic imaging can assist the clinician in the diagnosis and management of patients who have glaucoma. A-scan ultrasonography is used most frequently to determine ocular axial length for purposes of intraocular lens implant calculation. B-scan ultrasonography can be used to map the location and extent of staphyloma formation to avoid accidental trauma to the globe during retrobulbar anesthetic administration and is valuable in the management of the patient who has glaucoma when there is little or no visualization of the posterior segment. Ultrasound biomicroscopic imaging is ideal for assessing anterior chamber angle anatomy and anterior segment abnormalities.