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In ophthalmology, Functional visual loss is the reduction in visual acuity or visual field that has no physiological or organic basis. This disease can come under the spectrum of functional neurological disorder or somatic symptom disorder under the categorization of the Diagnostic and Statistical Manual of Mental Disorders-5.
Children who experience nocturnal hallucinations accompanied by macropsia may seek medical care for panic attack disorders and instead are diagnosed with forms of epilepsy. Epilepsy patients may have no memory of the seizure, but can remember the hallucinations and aura which proceed the attack.
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]
Around 15-20% of newborns with Down syndrome are also diagnosed with some degree of congenital hearing loss. [13] Children with Down syndrome commonly have glue ear, which can lead to infections in the ear, and may cause hearing loss. [14] Glue ear is a condition in which the middle part of the ear behind the eardrum fills with fluid. [15]
Children that are enrolled presently usually developed blindness 5 or more years prior to enrollment, consequently not reflecting current possible causes. [28] About 66% of children with visual impairment also have one other disability (comorbidity), be it, intellectual disabilities, cerebral palsy , or hearing loss . [ 29 ]
Visual snow as a temporary occurrence under certain conditions is normal and doesn't require intervention. [citation needed] Visual snow syndrome is a pathological condition, where visual disturbances persist constantly and may be caused by issues in the visual or nervous system, requiring medical attention. [citation needed]
Oscillopsia is a visual disturbance in which objects in the visual field appear to oscillate. The severity of the effect may range from a mild blurring to rapid and periodic jumping. [1] Oscillopsia is an incapacitating condition experienced by many patients with neurological disorders. [2]
Pituitary tumors are the most common cause of chiasmal syndromes. Visual field defects may be one of the first signs of non-functional pituitary tumor. These are much less frequent than functional adenomas. Systemic hormonal aberrations such as Cushing's syndrome, galactorrhea and acromegaly usually predate the compressive signs. Pituitary ...