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The Amsler grid showing the visual perception of the left eye of a person experiencing metamorphopsia (straight lines appear bent or curved) [1] [2]. Metamorphopsia (from Ancient Greek: μεταμορφοψία, metamorphopsia, 'seeing mutated shapes') is a type of distorted vision in which a grid of straight lines appears wavy or partially blank.
People with Down syndrome experience a wide range of emotions. [52] While people with Down syndrome are generally happy, [53] symptoms of depression and anxiety may develop in early adulthood. [9] Children and adults with Down syndrome are at increased risk of epileptic seizures, which occur in 5–10% of children and up to 50% of adults. [9]
Ataxia telangiectasia (Louis–Bar syndrome) Encephalotrigeminal angiomatosis (Sturge–Weber syndrome) (encephalofacial cavernous hemangiomatosis) Neurofibromatosis (von Recklinghausen's disease) Tuberous sclerosis (Bourneville's syndrome) Wyburn–Mason syndrome (racemose hemangiomatosis)
When viewing an Amsler grid, some straight lines appear wavy and some patches appear blank [67] When viewing a Snellen chart, at least 2 lines decline [citation needed] In dry macular degeneration, which occurs in 85–90 percent of AMD cases, drusen spots can be seen in Fundus photography [citation needed]
Brushfield spots are a characteristic feature of the chromosomal disorder Down syndrome or trisomy 21. They occur in 35–78% of newborn infants with Down syndrome. [2] Brushfield spots tend to be obscured by pigmentation of the anterior border layer of the iris in patients with darker irides.
This is a list of people with Down syndrome, a condition also known as Down's syndrome or trisomy 21. Down syndrome is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [1] It is typically associated with developmental delays, characteristic physical features, and mild to moderate intellectual disability ...
Blurred vision is an ocular symptom where vision becomes less precise and there is added difficulty to resolve fine details. Temporary blurred vision may involve dry eyes, eye infections, alcohol poisoning , hypoglycemia , or low blood pressure .
Anisometropia causes some people to have mild vision problems, or occasionally more serious symptoms like alternating vision or frequent squinting. However, since most people do not show any clear symptoms, the condition usually is found during a routine eye exam. [8] For early detection in preverbal children, photoscreening can be used.