What Causes Blurred Vision?


Quick Answer

According to Healthline, blurred vision can signify a variety of conditions such as cataracts, nearsightedness, injuries to the cornea, glaucoma and eye infections. Blurry vision can also occur in individuals with diabetes or as a result of the natural aging process. It is important for anyone experiencing unexplained symptoms of blurred vision to consult with a vision specialist to ensure an accurate diagnosis.

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Full Answer

Mayo Clinic explains that blurred vision is a common symptom of eyestrain, which is caused by excessive strain of the eyes due to reading, staring into computer screens for extended periods of time and exposure to glaring light. Mayo Clinic also states that additional symptoms of eye strain can include dry eyes, watering eyes, light sensitivity, eye pain and neck pain.

According to MedlinePlus, blurry vision is also a common warning symptom that is associated with migraine headaches. Migraines can be brought on by several different factors that include alcohol consumption, exposure to bright lights, anxiety, cigarette smoke and hormone fluctuations. Foods such as bacon, onions, chocolate and fish, as well as foods that contain monosodium glutamate (MSG), are also known to trigger migraine attacks. Additional warning symptoms can include eye pain, lines or stars in the field of vision and tunnel vision.

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