Prepapillary vascular loops

Area of Science:

• Ophthalmology
• Vascular Biology
• Retinal Imaging

Background:

• Prepapillary vascular loops are rare vascular anomalies.
• Their clinical significance and potential complications are not fully understood.

Purpose of the Study:

• To characterize the clinical and angiographic features of prepapillary vascular loops.
• To identify associated complications and variations.

Main Methods:

• Retrospective analysis of 21 eyes from 18 patients with prepapillary vascular loops.
• Fluorescein angiography was used to determine loop type and assess vascular supply.

Main Results:

• Twenty loops were arterial, one was venous.
• Cilioretinal arteries were present in 16 eyes, contributing to retinal blood supply.
• New associations included hyphema and amaurosis fugax, alongside known complications like vitreous hemorrhage and branch retinal artery obstruction.

Conclusions:

• Prepapillary vascular loops exhibit diverse presentations.
• Arterial loops are associated with significant complications, including newly identified ones like hyphema and amaurosis fugax.