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  2. Prism correction - Wikipedia

    en.wikipedia.org/wiki/Prism_correction

    Yoked prism can move the image away from primary gaze without the need for a constant head tilt or turn. Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base". The base is the thickest part of the lens and is opposite from the apex.

  3. Homonymous hemianopsia - Wikipedia

    en.wikipedia.org/wiki/Homonymous_hemianopsia

    Causes. brain bleed, brain inflammation, brain tumor, dementia, epilepsy, lymphoma, other kinds of brain injuries, and stroke. Diagnostic method. magnetic resonance imaging. Hemianopsia, or hemianopia, is a visual field loss on the left or right side of the vertical midline.

  4. Vision therapy - Wikipedia

    en.wikipedia.org/wiki/Vision_therapy

    Prisms for near binocular disorders and for producing postural change – the use of "yoked" prisms to redirect a person's gaze and bring about a range of claimed benefits including postural improvements and increased wellbeing.

  5. Transient ischemic attack - Wikipedia

    en.wikipedia.org/wiki/Transient_ischemic_attack

    A transient ischemic attack (TIA), commonly known as a mini-stroke, is a minor stroke whose noticeable symptoms usually end in less than an hour. TIA causes the same symptoms associated with strokes , such as weakness or numbness on one side of the body, sudden dimming or loss of vision, difficulty speaking or understanding language, slurred ...

  6. Stroke Risk is Increasing Mainly in Younger People, Here's Why

    www.aol.com/stroke-risk-increasing-mainly...

    Young adults in particular, saw outsized increases in stroke. Among those aged 18-44 years old there was a 14.6% increase in stroke prevalence; for adults in the 45-64 category, it increased by 15.7%.

  7. Cerebral infarction - Wikipedia

    en.wikipedia.org/wiki/Cerebral_infarction

    Specialty. Neurology. Cerebral infarction, also known as an ischemic stroke, is the pathologic process that results in an area of necrotic tissue in the brain (cerebral infarct). [1] In mid to high income countries, a stroke is the main reason for disability among people and the 2nd cause of death. [2]

  8. Peli Lens - Wikipedia

    en.wikipedia.org/wiki/Peli_Lens

    The Peli Lens is a mobility aid for people with homonymous hemianopia. It is also known as “EP” or Expansion Prism concept and was developed by Dr. Eli Peli of Schepens Eye Research Institute in 1999. It expands the visual field by 20 degrees.

  9. Prism (optics) - Wikipedia

    en.wikipedia.org/wiki/Prism_(optics)

    Prism spectacles with a single prism perform a relative displacement of the two eyes, thereby correcting eso-, exo, hyper- or hypotropia. In contrast, spectacles with prisms of equal power for both eyes, called yoked prisms (also: conjugate prisms, ambient lenses or performance glasses) shift the visual field of both eyes to the same extent.

  10. Brain ischemia - Wikipedia

    en.wikipedia.org/wiki/Brain_ischemia

    Vascular surgeon. Brain ischemia is a condition in which there is insufficient bloodflow to the brain to meet metabolic demand. [1] This leads to poor oxygen supply or cerebral hypoxia and thus leads to the death of brain tissue or cerebral infarction / ischemic stroke. [2] It is a sub-type of stroke along with subarachnoid hemorrhage and ...

  11. Brainstem stroke syndrome - Wikipedia

    en.wikipedia.org/wiki/Brainstem_stroke_syndrome

    Symptoms of a brainstem stroke frequently include sudden vertigo and ataxia, with or without weakness. Brainstem stroke can also cause diplopia , slurred speech and decreased level of consciousness. A more serious outcome is locked-in syndrome .