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Choroidal blood drainage is highly varied.1 Generally, each of the four quadrants of the eye converge to form a large dilated vascular channel called the ampulla. The ampulla is about 1.5–2 mm wide and up to 5 mm long; it drains into the vortex veins.2 The main drainage route is through 6–8 vortex veins, which perforate the sclera at the equator. Another route is defined as the posterior route, where the blood drains out either through the choriovaginal veins, which penetrate the sclera near the optic nerve on the macular side, or through the macular vortex veins, which penetrate the sclera under the macula.3 (figure 1A)
Unusual dilation of the peripherally routed vortex veins at the site of ampulla has been reported a number of times.4–8 Choroidal varices are generally asymptomatic and often found coincidentally in patients of middle age.4 The aetiology is unknown, but …
Contributors EC contributed in analysis, interpretation of data and in concept and design of the study. ME, VD and KM contributed in acquisition and interpretation of the data. OŞ and OÇ contributed in the revision of the study and final approval of the version to be published.
Competing interests All authors have completed the ICMJE uniform disclosure form at http://www.icmje.org/coi_disclosure.pdf and declare: no support from any organisation for the submitted work; no financial relationships with any organisations that might have an interest in the submitted work in the previous 3 years; no other relationships or activities that could appear to have influenced the submitted work.
Patient consent Obtained.
Ethics approval The patient has approved this report.
Provenance and peer review Not commissioned; externally peer reviewed.