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.