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What causes the loss of temporary peripheral vision?

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A temporary loss of peripheral vision, also referred to as temporary tunnel vision, can be caused by a variety of factors that include high levels of adrenaline in the body from stress or anger, according to Eye Institute. The condition can also be triggered by drug or alcohol use.

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Temporary tunnel vision can also be caused by vasovagal syncope, a condition that causes a drop in blood pressure that leads to fainting, according to Mayo Clinic. Additional symptoms of vasovagal syncope include pale skin, dizziness, blurred vision and cold sweats. It is important for individuals to consult with a physician following fainting episodes, as fainting can signify underlying heart or brain disorders.

Peripheral vision loss can also signify a serious medical emergency, explains Healthgrades. It is important for individuals with symptoms of tunnel vision to seek immediate medical attention if their symptoms are accompanied by slurred speech, headache, a numb sensation on one side of the body or eye pain. Peripheral vision loss is commonly associated with glaucoma, an eye condition in which the optic nerve deteriorates over time. Peripheral vision loss can also be caused by a retinal detachment condition in which the retina pulls away from the blood vessels of the eye.

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