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  2. Convergence insufficiency - Wikipedia

    en.wikipedia.org/wiki/Convergence_insufficiency

    The symptoms and signs associated with convergence insufficiency are related to prolonged, visually demanding, near-centered tasks. They may include, but are not limited to, diplopia (double vision), asthenopia (eye strain), transient blurred vision, difficulty sustaining near-visual function, abnormal fatigue, headache, and abnormal postural adaptation, among others.

  3. Astigmatism - Wikipedia

    en.wikipedia.org/wiki/Astigmatism

    Hopefully, after this, the eye will focus all light on the same location at the retina, and the patient's vision will be less blurred. [medical citation needed] In against-the-rule astigmatism, a plus cylinder is added in the horizontal axis (or a minus cylinder in the vertical axis). [18]

  4. Visual snow syndrome - Wikipedia

    en.wikipedia.org/wiki/Visual_snow_syndrome

    Visual snow syndrome (VSS) is an uncommon neurological condition in which the primary symptom is that affected individuals see persistent flickering white, black, transparent, or colored dots across the whole visual field. [7] [4] Other common symptoms are palinopsia, enhanced entoptic phenomena, photophobia, and tension headaches.

  5. Vision disorder - Wikipedia

    en.wikipedia.org/wiki/Vision_disorder

    A vision disorder is an impairment of the sense of vision. Vision disorder is not the same as an eye disease . Although many vision disorders do have their immediate cause in the eye, there are many other causes that may occur at other locations in the optic pathway.

  6. Health effects of 3D - Wikipedia

    en.wikipedia.org/wiki/Health_effects_of_3D

    Seeing 3D movies can increase rating of symptoms of nausea, oculomotor and disorientation, especially in women with susceptible visual-vestibular system.This is caused by a “disagreement” between the vestibular system and the visual input, causing that the body interprets it is moving, creating a contradiction with the vestibular system. [5]

  7. Optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Optic_neuropathy

    The main symptom is loss of vision, with colors appearing subtly washed out in the affected eye. A pale disc is characteristic of long-standing optic neuropathy. In many cases, only one eye is affected and a person may not be aware of the loss of color vision until the examiner asks them to cover the healthy eye.

  8. Photopsia - Wikipedia

    en.wikipedia.org/wiki/Photopsia

    Impaired blood flow to the cells of the occipital lobe (ischemia, for example as caused by a TIA or Vertebrobasilar insufficiency) will lead to temporary visual problems; if the poor blood flow is sustained it will lead to cell death (infarction, for example as caused by a stroke) which may cause persistent visual problems. The main symptoms ...

  9. Computer vision syndrome - Wikipedia

    en.wikipedia.org/wiki/Computer_vision_syndrome

    Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.

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