Blurry Eyesight Causes

Vision Without Glasses
photo credit: fulbert05

Blurry Vision - more common than you think

Author: Bailey

Research shows over 50% of the population over 15 years old use glasses. This number jumps significantly to over 85%, over the age of 45.

Why are so many people wearing glasses? Answer: because of blurry vision.

So let's look at this subject in more detail.

What causes Blurry Vision? There are many reasons, here are the top 5 causes:

  1. Long-sighted
  2. Short-sighted
  3. Astigmatism
  4. Presbyopia
  5. Weak Eye Muscles

1. Long-sighted (Hyperopia)
Longsightedness, is when your eyes focus images behind your retina (back of your eyes). This mainly affects reading, computer use and office tasks. Longsighted can cause symptoms such as blurry vision, headaches and tired eyes after a period of concentrated visual work. Reading becomes more difficult and school work can be affected.

2. Myopia (short-sighted)
A myopic, or shortsighted person, has difficulty seeing objects in the distance. These include blurry road signs, blackboards in a classroom, or scoreboards at a sporting event. Myopia is a common condition, occurring in about 15% of the population. Often, a person will not realize that they cannot see clearly, especially with mild shortsightedness. However, an eye examination by an optometrist will reveal the problem. Although there is no certain prevention for myopia, properly prescribed spectacles or contact lenses will enable a person to see clearly.

3. Astigmatism
Astigmatism is when the shape of the cornea (front of the eyes) is not spherical, but oval in shape. This causes blurry vision. Astigmatism can only cause headaches, fatigue and reduced concentration.

4. Presbyopia
Presbyopia is a common condition which makes reading difficult. This is usually first noticed around the age of 40 to 50 years, and is part of the normal aging process. This can happens because after 40 years old, the lens inside the eye starts to lose its strength. This loss in strength makes it difficult for a person to focus clearly, and tasks such as reading and computer use become difficult. You might notice blurry vision, sore eyes, headaches or tiredness resulting from reading or computer use.

5. Weak Eye Muscles

Muscles are need for focusing (accommodation) and moving the eyes across a page (Eye tracking). If the eye muscles are weak, they tire easily resulting in blurry vision.

The optometrist can help alleviate symptoms with eye exercises or spectacles for close work such as reading and using computers.

Other Causes:

Other causes of blurry vision include dry eyes, watery eyes and eye infections. More serious eye diseases can also cause blurry vision including catatract, glaucoma, macular degeneration and diabetic eye damage.

What do I do?

If you notice blurry vision, make sure you make an appointment with an Optometrist. They will provide a comprehensive eye check up and discuss the causes with you.

Most commonly blurry vision is treated with glasses or vision therapy. If a more serious eye condition is found, the optometrist will discuss the treatment with you.

Article Source:

About the Author

Visual Problems can contribute significantly to Kids Reading, Learning and Attention Issues.
Vision Therapy provides new revolutionary programs that have been developed to treat various visual problems such as
sore eyes, eyes strain and convergence insufficiency .

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10 Responses to Blurry Eyesight Causes

  1. littlemisstop says:

    What medical symptoms causes lost of hair, immune weakness, and lost of eyesight and also tiredness?
    Losing lots of hair daily.
    Sleep early and always tired, light headed, eyesight can’t see far, gets blurry then lightheaded. Get tired and weak very easily.

    • aWellWisher says:

      All these are the symptoms. They are caused by some disease, that needs to be found out by a thorough clinical examination and investigations. CBC, Fasting Sugar, Thyroid Function Tests are particularly indicated.
      Good luck!

  2. hozh1518 says:

    Blurry eyesight after being sick?
    Three weeks ago i got sick with coughing, aching, chills, cold sweat, tiredness, and dizziness. Now almost all symptoms are gone, except i still have this feeling of being sick, like nothing seems real. could my blurred vision be causing this? Now when i look at things far away, it is very blurry. things look fine up close but this has never happened before. Can anyone help me?

  3. cris says:

    medicine or poison that can cause blurry eyesight?

  4. Boring says:

    Does using a manual camera by someone with bad eyesight cause blurry pictures?
    Wouldn’t the person over focus to compensate for their bad eyesight causing the pics to be fuzzy when they are developed? I know the simple fix would be to wear your contacts or glasses when taking the pictures, but I’m just wondering about what if you didn’t have them.

    • Spencer S says:

      If this is a fairly recent camera there should be a dial on the side of the place where you put your eye. This is called the diopter, and it compensates for vision prescriptions. Just turn the dial until you, or the person using the camera, can see clearly.

  5. Flex says:

    Does reading cause bad eyesight?
    Im planning to get into reading but i’ve heard that it causes blurry vision. And all of my friends that read have glasses or contacts. Does reading cause bad eyesight?

    • Brenda J says:

      The reason some may think that reading causes blurry vision is because when you’re reading you are using your inner ocular lens, not the top surface of the cornea, that you use for distance vision. Sometimes, if you’ve been reading for quite a while, it can take a couple of moments for the inner ocular lens to pull back, allowing your distance vision to restore. But, this does not “cause” bad eyesight. It is a very temporary restorative process.

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