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The pathogenesis of optic disc splinter haemorrhages: a new hypothesis
Matthias C Grieshaber1, Tobias Terhorst, Josef Flammer
1University Eye Clinic, University Hospital of Basel, Basel, Switzerland.
Purpose:
To describe a hypothesized relationship between optic disc haemorrhages (ODHs) and primary vascular dysregulation (PVD).
Methods:
Observational case report of a patient with classical PVD and five bilateral recurrent ODHs
Results:
The ODHs were superotemporal in the right eye and inferotemporal in the left; the eyes were otherwise normal. Intraocular pressure (IOP) never exceeded 17 mmHg. Visual fields were normal. Increased blood flow resistivity, a reduced blood flow of the extraocular vessels, a low systemic blood pressure, a cold-induced flow stop of the nailfold capillaries, and elevated endothelin-1 plasma levels were found, all confirming the diagnosis of vascular dysregulation.
Conclusions:
Optic disc haemorrhages may be due to a disturbed blood-retina barrier rather than to a mechanical rupture of the vessel. This barrier dysfunction may occur in the context of PVD.
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