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For people who have conditions such as epiretinal membrane (ERM), macular holes and retinal detachment, decreased metamorphopsia is associated with an increase in visual acuity. [4] Quantitative evaluation of metamorphopsia is an important step in understanding visual functions of individuals with macular disorders and is an essential tool for ...
Posterior cortical atrophy (PCA), also called Benson's syndrome, is a rare form of dementia which is considered a visual variant or an atypical variant of Alzheimer's disease (AD). [1] [2] [3] The disease causes atrophy of the posterior part of the cerebral cortex, resulting in the progressive disruption of complex visual processing. [4]
Prosopometamorphopsia (PMO [1]), also known as demon face syndrome, [2] is a visual disorder characterized by altered perceptions of faces. In the perception of a person with the disorder, facial features are distorted in a variety of ways including drooping, swelling, discoloration, and shifts of position.
“Dementia can affect the frontal and temporal lobes [of the brain], causing issues with object recognition. It can also affect the occipital lobes, causing issues with visual processing.
Frontotemporal dementia (FTD) is an early onset disorder that mostly occurs between the ages of 45 and 65, [13] but can begin earlier, and in 20–25% of cases onset is later. [11] [14] Men and women appear to be equally affected. [15] It is the most common early presenting dementia. [16]
Dementia can be categorized as reversible (e.g. thyroid disease) or irreversible (e.g. Alzheimer's disease). [12] Currently, there are more than 35 million people with dementia worldwide. In the United States alone the number of people affected by dementia is striking at 3.8 million. [13]
Understanding what increases the risk of dementia can help doctors and policymakers identify people most at risk and provide the right support to slow down or lessen the impact of cognitive decline.
Factor 1 is responsible for identifying why the delusional idea developed. In monothematic delusions, some neuropsychological abnormality typically causes the delusion. [2] In mirrored-self misidentification, this abnormality can be either impaired facial processing or mirror agnosia. [2]