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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. [3] [4] Elevated intraocular pressure is an important risk factor and symptom of ...
NASA has reported that fifteen long-duration male astronauts (45–55 years of age) have experienced confirmed visual and anatomical changes during or after long-duration flights. [5] Optic disc edema, globe flattening, choroidal folds, hyperopic shifts and an increased intracranial pressure have been documented in these astronauts.
Complications can include seizures, posterior reversible encephalopathy syndrome, and bleeding in the back of the eye. In hypertensive encephalopathy, generally the blood pressure is greater than 200/130 mmHg. Occasionally it can occur at a BP as low as 160/100 mmHg.
Once visual loss has occurred, it becomes more problematic, but there are reports of recovered vision if blood transfusions and agents that raise blood pressure are administered within hours. [20] A-PION [ edit ]
High blood pressure has previously been linked to dementia and damage to brain function and the new study, published in the European Heart Journal, shows for the first time exactly how high blood ...
Best known is the higher risk of normal tension glaucoma, a disease with an impaired regulation of blood flow in a large number of patients. If glaucomatous damage occurs despite normal eye pressure or if glaucomatous damage is progressive despite normalized intraocular pressure, frequently Flammer syndrome is the cause.
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