Factors that can Trigger Blurred Vision

By:Vasudha Bhat, Onlymyhealth Editorial Team,Date:Nov 26, 2014

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Blurry vision can cause hindrance in performing day-to-day tasks. Surprisingly, there is not always a major underlying problem. Your daily habits can also be the culprits. Read on to know more.
  • 1

    Blurry Vision is a Big Deal

    Having a blurry vision which makes things appear hazy, murky, oily or out-of-focus does not always mean that there is a change in your refractive error. Blurred vision can be triggered by milder things which are tremendously harmful and can lead to permanent loss of vision. Go through this list of some of the most common causes of blurred vision and decipher the reason for your trouble. Blurred vision is not normal thus, if you can relate with anything on the list, get an appointment fixed with your eye specialist at the earliest.

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  • 2

    Parched Peepers

    One of the most common causes of blurry vision is dry eye. If your vision improves after blinking your eye, you are in for some serious trouble. Cornea, which is dome-shaped surface on the front of the eyes, needs to be properly lubricated all the time so that you can see clearly. Dry eye can be a result of drug consumption and even some habits like reading, playing video games, watching television or working on the computer for long durations.

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  • 3

    Your Sleeping Position

    If you are in the habit of sleeping with your face smashed against the pillow you are most likely to wake up with a dry eye in the morning. This happens because when you move during the night, the eyelids snag on the pillow making them pull away from the eyeballs. This is similar to the floppy eyelid syndrome which mostly occurs in people with heavy body weight. Air blowing in the room can also make the eyes dry sometimes so, slow down the fan. Avoid exerting pressure on the eyes with your arms or hand while sleeping because this can compress the tissue and limit the circulation in the orbs.

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  • 4


    There are many medicines that can lead to blurry vision, including pills for high blood pressure, oral steroids, sleeping pills and drugs for erectile dysfunction. While taking antihistamines like OTC allergy medicines Zyrtec and Claritin you must stay extra cautious. These medicines can cause chemical reactions in the body that can hinder the tear production. Antihistamines can also increase the risk of narrow-angle glaucoma, especially in people who are farsighted.

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  • 5

    Contact Lenses

    A study published in Optometry and Vision Science has shown that 85 percent of contact lens users thought they were competent enough when it came to lens care practices. However, the researchers found that only 2 percent actually had the skills. When you wear lenses for too long or clean them incorrectly, they can increase the buildup area of the bacteria or parasites on the lenses and that could cause severe eye infections.

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  • 6

    High Blood Sugar Levels

    Blurred vision can be an indication of something wrong with the entire body and not just the eyes. At times, it can also be an early sign of diabetes. When the blood sugar level in the body shoots up, it causes the fluids to shift to the eye and the lenses change in size causing shift in focus. However, once you have your blood sugar level under control your vision can get back to normal.

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  • 7


    Although the risk of cataract usually increases with growing age, it can develop at any age or in some cases, can be present at the time of birth. Cataracts are cloudy or opaque areas in the eyes' lenses that can trigger blurry vision, problem in reading or colour distortion. It is most common in diabetics, people on medications like corticosteroids and smokers.

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  • 8


    It is common to experience blurry vision symptoms in full-blown strokes and transient ischemic attacks (TIA), also called mini-strokes. The symptoms of TIA can occur quickly and may not last long. The signs include blurred vision, twinkling lights or seeing a curtain pull down from the top of to the middle of field of vision. A grayed or darkened vision for few minutes may also appear. Some other symptoms like change in hearing or taste, confusion, coordination problems or problems with speaking can also occur.

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