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  2. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    When refractive errors in children are not treated, the child may be at risk of developing ambylopia, where vision may remain permanently blurry. [32] Because young children typically do not complain of blurry vision, the American Academy of Pediatrics recommends that children have yearly vision screening starting at three years old so that unknown refractive errors or other ophthalmic ...

  3. Blurred vision - Wikipedia

    en.wikipedia.org/wiki/Blurred_vision

    Blurred vision is an ocular symptom where vision becomes less precise and there is added difficulty to resolve fine details. Temporary blurred vision may involve dry eyes, eye infections, alcohol poisoning , hypoglycemia , or low blood pressure .

  4. Defocus aberration - Wikipedia

    en.wikipedia.org/wiki/Defocus_aberration

    The extent of blurry vision can be assessed by measuring visual acuity with an eye chart. Blurry vision is often corrected by focusing light on the retina with corrective lenses . These corrections sometimes have unwanted effects including magnification or reduction, distortion, color fringes, and altered depth perception.

  5. Why astigmatism causes blurry vision, especially at night - AOL

    www.aol.com/news/why-astigmatism-causes-blurry...

    Blurry vision and headaches are symptoms of astigmatism. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Mail. Sign in ...

  6. Astigmatism - Wikipedia

    en.wikipedia.org/wiki/Astigmatism

    When left untreated, astigmatism causes people to have a lower vision-related quality of life. Some factors that lead to this are a decrease in vision quality and an increase in glare and haloes. [33] People with astigmatism have more difficulty with night driving and can have a decreased productivity due to errors.

  7. Eye strain - Wikipedia

    en.wikipedia.org/wiki/Eye_strain

    Eye strain, also known as asthenopia (from astheno- 'loss of strength' and -opia 'relating to the eyes'), is a common eye condition that manifests through non-specific symptoms such as fatigue, pain in or around the eyes, blurred vision, headache, and occasional double vision. [1]

  8. Myopia - Wikipedia

    en.wikipedia.org/wiki/Myopia

    The Tian-tian 120 program ("Every day 120") encourages 120 minutes of outdoor time each day. [99] Compared to the cost of lifelong treatment for myopia with glasses, and in some cases, preventable blindness, the US$13 spent on screening young children for pre-myopia is considered a good investment in public health .

  9. Visual impairment - Wikipedia

    en.wikipedia.org/wiki/Visual_impairment

    As of 2015, there were 940 million people with some degree of vision loss. [5] 246 million had low vision and 39 million were blind. [1] The majority of people with poor vision are in the developing world and are over the age of 50 years. [1] Rates of visual impairment have decreased since the 1990s. [1]