Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Ultrasonography B‐scan image of a right eye with proliferative diabetic retinopathy (PDR) and tractional retinal detachment (TRD). A fibrovascular membrane (appearing as hyperechoic strands) covered the optic disk, and tracked along the retina superiorly (yellow asterisk) and inferiorly (not captured in the image). Image was obtained using the Absolu device (Quantel Medical, Cournon‐d'Auvergne, France)
