label: Abnormal retinal vein morphology
label_lc: abnormal retinal vein morphology
description: A condition characterized by structural abnormalities of the retinal veins, including tortuosity, dilation, narrowing, or irregularities in branching patterns. These changes may be associated with systemic or ocular diseases such as retinal vein occlusion, diabetic retinopathy, or hypertensive retinopathy.