Abstract
An 88-year-old female presented with redness in the left eye of one-month duration. On examination, the left eye showed 3 mm of proptosis with dilated and tortuous episcleral vessels and relative afferent pupillary defect. Intraocular pressure was 60 mmHg and showed open angles on gonioscopy with cup disc ratio of 0.8 in OS. A diagnosis of secondary open-angle glaucoma due to elevated episcleral venous pressure (EVP) was made. Magnetic resonance venogram revealed thrombosis of transverse and sigmoid sinus on the left side. This is the first case report of secondary open-angle glaucoma due to elevated EVP following thrombosis of transverse and sigmoid sinus.
Highlights
Elevated episcleral venous pressure (EVP) is one of the causes of secondary open-angle glaucoma
Our patient presented with dilation of episcleral vessels with raised intraocular pressure (IOP) with no other neurological symptoms, which is unusual
EVP is a component of the normal IOP, and any rise in EVP is associated with the same amount of increase in IOP and typically has a wide open anterior chamber angle, with blood in the Schlemm’s canal
Summary
Elevated episcleral venous pressure (EVP) is one of the causes of secondary open-angle glaucoma. We are reporting a case of secondary open-angle glaucoma, presenting as the initial manifestation of transverse and sigmoid sinus thrombosis without any neurological manifestations
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