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  2. Visual hallucination - Wikipedia

    en.wikipedia.org/wiki/Visual_hallucination

    Visual hallucinations may be simple/non-formed visual hallucinations, or complex/formed visual hallucinations. [15] Simple visual hallucinations without structure are known as phosphenes and those with geometric structure are known as photopsias. [16] These hallucinations are caused by irritation to the primary visual cortex (Brodmann's area 17 ...

  3. Visual release hallucinations - Wikipedia

    en.wikipedia.org/wiki/Visual_release_hallucinations

    [8] [9] Visual hallucinations generally appear when the eyes are open, fading once the visual gaze shifts. [1] It is widely claimed that sensory deprivation is instrumental in the progression of CBS. [10] During episodes of inactivity, hallucinations are more likely to occur. [1]

  4. Macular degeneration - Wikipedia

    en.wikipedia.org/wiki/Macular_degeneration

    Other signs and symptoms of macular degeneration include: Distorted vision in the form of metamorphopsia , in which a grid of straight lines appears wavy and parts of the grid may appear blank: Patients often first notice this when looking at things like miniblinds in their home or telephone poles while driving.

  5. Visual snow syndrome - Wikipedia

    en.wikipedia.org/wiki/Visual_snow_syndrome

    In some studies, lamotrigine as a treatment for visual snow syndrome only showed efficacy in 20% of patients, and in one study, patients using lamotrigine even reported worsening symptoms. [33] Medications that may be used include lamotrigine , acetazolamide , verapamil , [ 4 ] clonazepam , propranolol , and sertraline [ 34 ] but these do not ...

  6. Dementia with Lewy bodies - Wikipedia

    en.wikipedia.org/wiki/Dementia_with_Lewy_bodies

    Based on signs in his work and letters of progressive deterioration, fluctuating cognitive decline, deterioration in visuospatial function, declining attention span, and visual hallucinations and delusions, his may be the earliest known case where DLB was found to have been the likely cause of death.

  7. Alzheimer's disease - Wikipedia

    en.wikipedia.org/wiki/Alzheimer's_disease

    [37] [38] People with objective signs of cognitive impairment, but not more severe symptoms, may be diagnosed with mild cognitive impairment (MCI). If memory loss is the predominant symptom of MCI, it is termed amnestic MCI and is frequently seen as a prodromal or early stage of Alzheimer's disease. [ 39 ]