What is this ocular prosthesis called?

Scleral buckle or scleral buckling device.

It is a device designed to treat retinal detachment. Retinal detachment is a disease when there is a separation of the sensory retina from the underlying pigment epithelium. The device indent the sclera and keep the retinal layers adheres to each other.

The device can be placed encircling the globe or radially (parallel to the axis of the extraocular muscles). It can complete 360 degree around the globe or segmentally.

The device is made of silicone. There are 2 main components: outer solid silicone rubber (hyperdense on CT) and inner silicone sponge (air density on CT). Both are hypointense on T1 and T2WI and radiolucent on plain radiographs).

This patient has a scleral buckle encircling around his left eye after suffering from a retinal detachment. Uniquely, there is only hyperdense silicone rubber band, without silicone sponge.

What does the clinician want to know? The clinician would like us to mention the integrity of the device, sign of infection and the presence or absence of choroidal detachment which is the most common complication after the procedure.

Reference: Retinal Detachment: Imaging of Surgical Treatments and Complications. Radiographics 2003;23:983-994