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To report in four patients with retinal vein occlusion the presence of biomicr oscopically visible circulation in the minor arterial circle of the iris, preced ing rubeosis iridis in two cases. Retrospective observational case series. Four patients with ischemic type of central or hemi-central retinal vein occlusion s een at a single center. Dilation of the minor arterial circle remnants with biom icroscopically visible circulation was observed in four eyes of four adult patie nts with severe retinal ischemia secondary to retinal vein occlusion and precede d the occurrence of anterior segment neovascularization in two cases. In patient s with ischemic retinal vein occlusion, the clinical finding of a dilation of th e minor arterial circle may indicate the necessity of a closer follow-up to mak e a timely decision on panretinal photocoagulation.
To report in four patients with retinal vein occlusion the presence of biomicr oscopically visible circulation in the minor arterial circle of the iris, preced ing rubeosis iridis in two cases. Retrospective observational case series. Four patients with ischemic type of central or hemi-central retinal vein occlusion s een at a single center. Dilation of the minor arterial circle remnants with biom icroscopically visible cycles was observed in four eyes of four adult patients with severe retinal ischemia secondary to retinal vein occlusion and precede d the occurrence of anterior segment neovascularization in two cases. In patient s with ischemic retinal vein occlusion, the clinical finding of a dilation of th e minor arterial circle may indicate the necessity of a closer follow-up to mak ea timely decision on panretinal photocoagulation.