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Chorioretinal Anastomosis 4 Years after Blunt Trauma
Müller C., Meyer C. H.,
Philipps-Universität Marburg, Medizinisches Zentrum für Augenheilkunde (Marburg)
Purpose: Vascular proliferations develop separately from retinal or choroid vessels, due to horizontal anatomical barriers in the retina. In addition it is speculated, that different growth factors are responsible for the kind of proliferation. Chorio-retinal anastomosis occur in rare cases, such as trauma or after photocoagulation.
Method: We report a patient, who developed a chorio-retinal anastomosis 4 years after a blunt trauma.
Results: In the early phase of the fluorescence angiography (FA) there was a 3.5 MPS-disc area large hyperfluorescence, which expanded with diffuse borders. In the early phase of the indocyanin-green angiography (ICG) two retinal vessels with a large caliper were seen, who built an anastomosis with larger choroidal vessels. On optical coherence tomography (OCT) there was a hyperreflective subretinal thickening in the area of the fovea, which disappeared in the central zone. In this area of the suspected anastomosis a white linear structure was visible.
Conclusions: Blunt contusion of the eye may induce a rupture of Bruch`s membrane, leading to choroidal neovascularization. During a fibrovascular reorganization of the CNV unknown angiogenetic growths factors may lead to a reactive growth of chorio-retinal anastomosis.