Ophthalmologic (ocular) sonography uses specialized high-frequency ultrasound to image the globe, vitreous, retina, choroid, and orbit. It is indispensable when optical clarity is compromised by media opacities such as dense cataracts, vitreous hemorrhage, or corneal scarring, allowing visualization of the posterior segment when direct ophthalmoscopy is impossible.
B-mode contact scanning images the entire globe in real time, identifying retinal detachment (the classic hyperechoic membrane with open funnel or closed funnel configuration), vitreous hemorrhage and membranes, posterior segment tumors, choroidal detachment, and intraocular foreign bodies. A-mode (standardized echography) with quantitative tissue differentiation assists in characterizing solid intraocular tumors. Doppler assessment evaluates posterior ciliary artery and central retinal artery flow.
The RDMS with Ophthalmic (OphS) specialty from ARDMS is the dedicated credential. Practitioners work in ophthalmology practices, retina surgery centers, academic eye institutes, and ocular oncology programs. Ophthalmic sonographers undergo specific training in probe handling, patient positioning, and the A/B-mode technique systems distinct from general diagnostic ultrasound.