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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]
Age-related macular degeneration is a main cause of central blindness among the working-aged population worldwide. [6] As of 2022, it affects more than 200 million people globally with the prevalence expected to increase to 300 million people by 2040 as the proportion of elderly persons in the population increases.
Familial Danish dementia is an extremely rare, neurodegenerative disease characterized by progressive cataracts, loss of hearing, cerebellar ataxia, paranoid psychosis, and dementia. Neuropathological hallmarks include extensive atrophy of all areas of the brain, chronic diffuse encephalopathy , and the presence of exceedingly thin and nearly ...
At some point—usually as you enter middle age—most people develop this eye condition, which is a clouding of the eye’s lens that can get progressively worse and impair your vision.
Presbyopia is a typical part of the aging process. [4] It occurs due to age-related changes in the lens (decreased elasticity and increased hardness) and ciliary muscle (decreased strength and ability to move the lens), causing the eye to focus right behind rather than on the retina when looking at close objects. [4]
Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception.In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6]
A new report drafted by experts lists 14 modifiable risk factors that may help prevent or slow down dementia, including two new additions: high cholesterol and eye problems.
Age-related cataracts are responsible for 51% of world blindness, about 20 million people. [68] Globally, cataracts cause moderate to severe disability in 53.8 million (2004), 52.2 million of whom are in low and middle income countries. [69] In many countries, surgical services are inadequate, and cataracts remain the leading cause of blindness ...