What is the reason for blurred vision?

Blurred vision can be caused by various factors, including:
1. Refractive errors: These occur when the shape of the eye does not bend light correctly, resulting in blurred vision. Common refractive errors include nearsightedness (myopia), farsightedness (hyperopia), and astigmatism.

2. Eye conditions: Certain eye conditions, such as cataracts, glaucoma, macular degeneration, and diabetic retinopathy, can cause blurred vision.
3. Age-related changes: As we age, our eyes undergo changes that can affect our vision, such as presbyopia, a condition that makes it difficult to focus on close objects.
4. Eye strain: Spending long hours staring at a computer or digital screen, reading in poor light, or driving long distances can cause eye strain, leading to blurred vision.
5. Medications: Some medications, such as antihistamines, antidepressants, and blood pressure medications, can cause blurred vision as a side effect.
6. Head injury: A head injury can damage the optic nerve or the brain, leading to blurred or double vision.
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