Branch retinal artery occlusion secondary to prepapillary arterial loop.
OBJECTIVE
To report a case of branch retinal artery occlusion and prepapillary loop in a 10-year-old girl.


METHODS
Case report with funduscopic and fluorescein angiography imaging.


RESULTS
A 10-year-old girl presented with a history of the sudden onset of a superior visual field defect in her right eye. Fundus findings were consistent with thrombosis in a prepapillary arterial loop causing an inferior branch retinal artery occlusion.


CONCLUSIONS
Bilateral congenital prepapillary vascular loops are rare, and are usually asymptomatic. However, they can be complicated by vitreous hemorrhage and thrombosis. Such thrombotic events may be precipitated by hemodynamic or intravascular changes associated with exercise.
*Division of Inherited Eye Disease, Moorfields Eye Hospital, London, United Kingdom; †UCL Institute of Ophthalmology, University College London, London, United Kingdom; ‡Department of Ophthalmology, University of New South Wales, Sydney, Australia; §Laboratory of Visual Physiology, National Institute of Sensory Organs, National Hospital Organization, Tokyo Medical Center, Tokyo, Japan; and ¶Department of Ophthalmology, School of Medicine, Keio University, Tokyo, Japan.
Ravjit
R
Singh
Kaoru
K
Fujinami
Anthony T
AT
Moore
D002648:Child; D005124:Eye Abnormalities / Q000150:complications*; D005260:Female; D006801:Humans; D012161:Retinal Artery / Q000002:abnormalities*; D015356:Retinal Artery Occlusion / Q000209:etiology*; D012171:Retinal Vessels / Q000002:abnormalities*; D054079:Vascular Malformations / Q000150:complications*; D014786:Vision Disorders / Q000209:etiology*