Sometimes you may have an aura without head pain. You may also see wavy lines or flashing lights and have other sensory disturbances. Often migraine attacks are preceded by an aura, which can cause blurred vision. It can develop a hole that causes blurry vision. The macula is the center of your retina that is responsible for your central vision. It can become painful if it increases the pressure inside your eye. It’s caused by bleeding that occurs after your eye is injured. Hyphemaĭark red blood that pools inside the front of your eyeball is called a hyphema. Very high blood sugar levels cause the lens of your eye to swell, which results in blurred vision. In addition to blurry vision, you may feel like there’s something in your eye. When it gets scratched or injured, you may develop a corneal abrasion. Your cornea is the clear covering on the front of your eye. Other causes of eyestrain include reading and driving, especially at night and in poor weather. When it’s the result of focusing on an electronic device like a computer or cellphone, it’s sometimes called digital eyestrain. EyestrainĮyestrain can occur after looking at and focusing on something for a long time without a break. Other causes of sudden blurred vision 11. However, spinal injuries or a subdural hematoma may accompany a concussion, so it’s important to have a doctor examine you as soon as possible. Permanent damage or vision loss are unlikely with a concussion. A majority of the brain’s pathways are dedicated to vision and controlling the eye, so it’s not surprising that brain injuries can result in blurry vision. ConcussionĪ concussion is a mild traumatic brain injury. It may also be the result of an infection in another part of the body that has spread to the eye. The infection often occurs as a result of surgery. In addition to blurry vision, you may experience pus discharge from the eyes and swollen or puffy eyelids. This condition is called edophthalmitis and is a serious medical emergency. EndophthalmitisĪn infection in the fluids of your eyeball can cause severe inflammation. This is a medical emergency and requires treatment with eye drops to open the angle, decrease the pressure, and decrease the inflammation. In this situation, the pressure inside the eye can go up very quickly, causing redness, pain, and nausea. Angle closure glaucomaĪngle closure glaucoma occurs when the drainage system within the eye is blocked. While dry macular degeneration proceeds slowly, it can quickly progress to wet and cause sudden symptoms. Unlike dry macular degeneration, this type can begin suddenly and progress rapidly. It causes blurriness and vision loss in the center part of your visual field. Abnormal vessels may grow, causing blood and other fluid to leak into the macula. The center of your retina is called the macula. One of its symptoms can be blurred vision in one or both eyes.
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