Direct trauma to the eye itself: This will result in vision loss. Injury to the eye can result in vision loss. It may strike every few months and usually affects the same eye every time. This usually lasts less than an hour and then the vision returns to normal. This causes brief attacks of blurring and dimming of the field of vision, sometimes with blank spots in it. Blood vessel spasm: A blood vessel spasm cuts off most of the blood supply to the eye and makes the pressure within the eye drop. Viagra may also be a risk for this as it can lower blood pressure. Abnormally low blood pressure may be caused by an anti-hypertensive medication that is too strong and makes blood pressure drop too low especially while sleeping, so that the person wakes up with vision loss in one eye. This will eventually result in tissue death and permanent loss of vision. "Eye stroke": An "eye stroke" means there is too little blood flow to the eye tissues. Low blood pressure within the eye can result in the following phenomenon as well as vision loss. Abnormally low blood pressure within the eye High blood pressure can lead to stroke, which is the blockage or rupture of an artery within the brain that causes weakness and loss of use in one side of the body, including the eye. This can lead to increased pressure within the eye itself and cause interference with proper vision. More serious: Loss of vision in one eye, along with weakness throughout the same side of the body and a severe headache, is a medical emergency and must be treated immediately.Ĭauses of loss of vision in one eye Abnormal, very high systemic blood pressure. 
Serious: Any loss of vision, even with few or no other symptoms, should be seen by your medical provider as soon as possible.The severity of your vision loss is ultimately dependent on the cause. Men taking Viagra: As well as anyone on high doses of blood pressure medication.Anyone with circulatory problems: Such as hardening of the arteries or inflammation of the blood vessels.Anyone with a family history of migraine headaches.Anyone with diabetes or high blood pressure.The following individuals are more likely to experience symptoms. Who is most often affected by loss of vision in one eye symptoms Resolve within an hour or less in some cases.Come on gradually but grow increasingly worse.Blurred vision: Or seeing double images.Dry, burning, swollen, or encrusted eyes.Sudden and painless loss of vision in one eye: Sometimes upon waking up in the morning.A headache in addition to vision loss: As well as severe weakness on the same side of the body.If you're experiencing loss of vision in one eye, it's likely to also experience the following: Common characteristics of vision loss in one eye Temporary blindness in one or both eyes is also called transient loss of vision, eye stroke, or amaurosis fugax. Head injuries and some other illnesses can also have a direct effect on the blood supply, nerves, and tissues of the eyes.
Very often a temporary loss of vision in one or both eyes is not caused by a problem in the eye itself, but by an illness of the heart, circulatory system, or nervous system.
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