Not only causing heart and kidney problems, untreated high blood pressure can also affect vision and lead to eye diseases. High blood pressure damages the blood vessels in the retina, the area behind the eye where images are focused.

Papilledema is an important fundus symptom for neurologic disease, caused by many causes such as orbital, ocular, intracranial and systemic.

Cerebral venous thrombosis is a condition in which the venous system is blocked, causing circulatory stasis, leading to increased intracranial pressure, edema, and cerebral hemorrhage. Clinical manifestations in patients may include: Headache, convulsions, weakness of limbs, papilledema, localized nerve damage, abnormal movement, impaired consciousness with varying degrees, and the most severe is coma,...

Cerebral venous thrombosis is a general term describing thrombosis of the cerebral venous system, including: dural sinus thrombosis, deep venous thrombosis, and cortical venous thrombosis.