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  2. Posterior ischemic optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Posterior_ischemic_optic...

    The combination of anemia and low blood pressure means that the blood is carrying less oxygen to the tissues. The optic nerve can be at very high risk for damage from insufficient blood supply due to swelling (from lack of oxygen) in a confined bony space resulting in a compartment syndrome .

  3. Ocular hypertension - Wikipedia

    en.wikipedia.org/wiki/Ocular_hypertension

    Ocular hypertension is the presence of elevated fluid pressure inside the eye ( intraocular pressure ), usually with no optic nerve damage or visual field loss. [1] [2] For most individuals, the normal range of intraocular pressure is between 10 mmHg and 21 mmHg.

  4. Hypertension - Wikipedia

    en.wikipedia.org/wiki/Hypertension

    t. e. Hypertension, also known as high blood pressure, is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. [11] High blood pressure usually does not cause symptoms itself. [1] It is, however, a major risk factor for stroke, coronary artery disease, heart failure, atrial fibrillation, peripheral ...

  5. Glaucoma - Wikipedia

    en.wikipedia.org/wiki/Glaucoma

    The main cause of damage to the optic nerve is intraocular pressure (IOP), excessive fluid pressure within the eye, which can be caused by factors such as blockage of drainage ducts and narrowing or closure of the angle between the iris and cornea.

  6. Hypertensive encephalopathy - Wikipedia

    en.wikipedia.org/wiki/Hypertensive_encephalopathy

    Complications can include seizures, posterior reversible encephalopathy syndrome, and bleeding in the back of the eye. [1] [3] In hypertensive encephalopathy, generally the blood pressure is greater than 200/130 mmHg. [1] Occasionally it can occur at a BP as low as 160/100 mmHg. [4]

  7. Papilledema - Wikipedia

    en.wikipedia.org/wiki/Papilledema

    Papilledema. Papilledema or papilloedema is optic disc swelling that is caused by increased intracranial pressure due to any cause. [1] The swelling is usually bilateral and can occur over a period of hours to weeks. [2] Unilateral presentation is extremely rare. In intracranial hypertension, the optic disc swelling most commonly occurs ...

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