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To the Editor I was intrigued to read the case of trauma-induced prepapillary arterial loop torsion producing retinal arterial occlusion in a young person, but will politely contest the authors’ claim that this is the first such report.1
A 1993 article documented entirely similar findings in a young woman who was struck in the head while swimming.2 She developed obscuration in a sector of vision 15 minutes after the episode. Torsion of a prepapillary arterial loop from the blunt trauma was proposed as the mechanism of arterial occlusion. The features were demonstrated on fluorescein angiography. In that case there was no vitreous detachment.
Walland M. Prepapillary Vascular Loop. JAMA Ophthalmol. 2015;133(3):362. doi:10.1001/jamaophthalmol.2014.5047
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