Are you rubbing your eyes for clear vision? If yes, then you might have blurry vision. Blurry, unclear, or unfocused vision is the most common eyesight issue. You may need treatment or new glasses to clear up your blurred vision. But remember sudden blurred vision isn’t normal. But what is the reason for blurry vision? There are many reasons for blurred vision, including nearsightedness, farsightedness, stroke, migraine, and refractive errors. Apart from that, any problem with components of your eye can also cause blurry vision. Let us discuss in detail the most common causes of blurry vision. 

Reasons for eye blurring


Diabetes can cause long-term and short-term negative effects on the eye. A sudden rise in your blood sugar can cause sudden blurred vision. High blood sugar can damage small blood vessels in the retina over time. It can also lead to swelling of the retina. 


Sudden blurred vision is common after a stroke. Research shows that 20% of people with stroke end up with permanent vision loss, including Hemianopia, Quadrantanopia, and Scotoma. This occurs when your stroke affects the parts of your brain that controls vision. 

Detached Retina 

The retina sends visual images to the brain through the optic nerve. When the retina detaches, it loses its blood and nerve supply, and eventually, it can’t perform its job. If the detachment is not repaired it can lead to blindness. 

Eye strain 

Digital eye strain, i.e extended use of computers or digital devices can cause blurred or double vision. Not only that it can also cause tire, sore, burning, or itchy eyes. Reading, driving, and other activities that require looking and focusing on so long for a long time can also cause blurry vision. Eye strain is the main reason for eye blurring. 

Corneal Abrasion

Corneal Abrasion is a minor scratch on your cornea, the outermost layer of your eye. Most corneal abrasions will heal within 48 hours, but if it is in the center of the cornea, it causes blurry vision. Antibiotic drops are prescribed by the ophthalmologist to cure infection or inflammation. 

Dry Eye Syndrome  

Dry eyes and blurry vision are closely related to one another. Low humidity, prolonged screen time, exposure to smoke, and wind can cause poor tear production that causes blurry vision. Aging, medications, allergies, and menopause are some other reasons for blurry eyes.  


Blurry vision is the most common symptom of cataracts. The blurry vision can be foggy, cloudy, or filmy. The vision becomes more blurrier if not treated at the right time. Nearly half of Americans of age 80 or more have cataracts or had surgery for cataracts. It also makes vision less colorful.