Ocular Ultrasound and Ultrasound Biomicroscopy (UBM)
Ocular Ultrasound and Ultrasound Biomicroscopy are non-invasive diagnostic tests allowing us to visualize the inner structures of the eye.
Ocular ultrasound utilizes a piezoelectric crystal which vibrates at a certain frequency (MHz). Ultrasonic waves propagated by the probe bounce off the tissues and reflects back on the computer screen as an image.
20 MHz probe is used to see the deeper structures of the eye and the 35MHz probe (UBM) gives us sharp 5mm depth detailed image of the anterior structures of the eye, especially the drainage angle for glaucoma, the iris (tumors and structure) and the cornea.
Intraocular tumors, congenital abnormalities, trauma and retinal detachments are some of the lesions seen by these imaging techniques.
Fluorescein Angiography (FA)Fluorescein Angiography is a technique in which a fluorescent dye is injected intravenously and timed photographs are done of the retina over a 10-15 minute period to outline damaged areas of the retina and help us diagnose retinal problems.
This machine is used to photograph the back of the eye to see detailed color images of the retina and optic nerve.
UBM of closed-angle glaucoma.
Ultrasound of a retinal detachment.