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  2. Bitemporal hemianopsia - Wikipedia

    en.wikipedia.org/wiki/Bitemporal_hemianopsia

    Bitemporal hemianopsia is the medical description of a type of partial blindness where vision is missing in the outer half of both the right and left visual field. It is usually associated with lesions of the optic chiasm, the area where the optic nerves from the right and left eyes cross near the pituitary gland.

  3. Chronic relapsing inflammatory optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Chronic_relapsing...

    Pain, visual loss, relapse, and steroid response are typical of CRION. [1] [3] Ocular pain is typical, although there are some cases with no reported pain. [3] Bilateral severe visual loss (simultaneous or sequential) usually occurs, but there are reports of unilateral visual loss. [3] Patients can have an associated relative afferent pupillary ...

  4. Toxic and nutritional optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Toxic_and_nutritional...

    Vision loss in toxic and nutritional optic neuropathy is bilateral, symmetric, painless, gradual, and progressive. Dyschromatopsia, a change in color vision, is often the first symptom. Some patients notice that certain colors, particularly red, are less bright or vivid; others have a general loss of color perception.

  5. Homonymous hemianopsia - Wikipedia

    en.wikipedia.org/wiki/Homonymous_hemianopsia

    Hemianopsia, or hemianopia, is a visual field loss on the left or right side of the vertical midline. It can affect one eye but usually affects both eyes. Homonymous hemianopsia (or homonymous hemianopia) is hemianopic visual field loss on the same side of both eyes. Homonymous hemianopsia occurs because the right half of the brain has visual ...

  6. Binasal hemianopsia - Wikipedia

    en.wikipedia.org/wiki/Binasal_hemianopsia

    Binasal hemianopsia is the medical description of a type of partial blindness where vision is missing in the inner half of both the right and left visual field. It is associated with certain lesions of the eye and of the central nervous system, such as congenital hydrocephalus.

  7. Optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Optic_neuropathy

    Leber's hereditary optic neuropathy (LHON) is the most frequently occurring mitochondrial disease, and this inherited form of acute or subacute vision loss predominantly affects young males. LHON usually presents with rapid vision loss in one eye followed by involvement of the second eye (usually within months).

  8. Optic neuritis - Wikipedia

    en.wikipedia.org/wiki/Optic_neuritis

    Major symptoms are sudden loss of vision (partial or complete), sudden blurred or "foggy" vision, and; pain on movement of the affected eye. [4] [5] [2]Many patients with optic neuritis may lose some of their color vision in the affected eye (especially red), with colors appearing subtly washed out compared to the other eye.

  9. Posterior ischemic optic neuropathy - Wikipedia

    en.wikipedia.org/wiki/Posterior_ischemic_optic...

    [2] [5] At onset vision loss is unilateral, but without treatment it rapidly progresses to involve both eyes. Vision loss is usually severe, ranging from counting fingers to no light perception. Associated symptoms are jaw pain exacerbated by chewing, scalp tenderness, shoulder and hip pain, headache and fatigue. [3] [4]