{"id":566,"date":"2024-11-14T18:30:35","date_gmt":"2024-11-14T18:30:35","guid":{"rendered":"https:\/\/visualstressclinic.ca\/?page_id=566"},"modified":"2026-01-21T01:34:13","modified_gmt":"2026-01-21T01:34:13","slug":"autism","status":"publish","type":"page","link":"https:\/\/opticalm.ca\/fr\/autism\/","title":{"rendered":"Trouble du spectre de l'autisme"},"content":{"rendered":"
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(ASD)<\/h4>\n

Autism spectrum disorder<\/h2>\n

Autism spectrum disorder (ASD) includes a range of similar conditions that affect a person\u2019s social interaction, communications, interests and behaviour. Recent research has found that the social deficit in ASD is secondary to neuronal overactivation and the painful perception of environmental stimuli. [1<\/a>] ASD is in part caused by dysfunction of perceptual information processing [2<\/a>]. Visual Stress, that is caused by the hyperactivation of the visual cortex, leads to pain and misperceptions of visual stimuli in the environment.<\/p>\n

Individuals with ASD report and are observed to have symptoms of other conditions such as learning disabilities, attention disorders, tic disorders, epilepsy, anxiety and sensory processing difficulties. [NHS.uk<\/a>] It has been suggested that some individuals with autism suffer from a co-occurring disorder called Visual Stress. Individuals with ASD or these other conditions report visual processing abnormalities such as hypersensitivity to lights and colours, and experiences of visual distortion. These distortions may, for example, alter the perceived dimensions of rooms or faces. Visual distortions can also result in difficulties writing on printed lines and maintaining appropriate spacing between letters and words.<\/p>\n

Visual Stress is a neurological condition characterized by hyperactivation of the visual cortex leading to symptoms of visual perceptual distortions and eyestrain when viewing patterned images in the environment, including text. The symptoms can be alleviated by individually prescribed precision coloured filters. [3<\/a>]<\/p>\n

Research has shown that precision filters may reduce these symptoms in individuals with ASD. Current findings are important in showing that perceptual abnormalities in a significant proportion of children with autism benefit from the use of an overlay, not just in respect of reading ability, but also as regards improvements in perception of facial expressions. This provides further evidence that low-level perceptual abnormalities may be responsible for their difficulties attending and processing facial expressions for individuals with ASD. [4<\/a>]<\/p>\n

\u201cSensory processing problems can cause real pain; even non-verbal individuals with autism can have a problem with sensory overload. Some people are really helped by coloured lenses.\u201d - Temple Grandin, Ph.D.<\/p>\n

\u201cI know of several children and adults (with Asperger's Syndrome) who have reported a considerable reduction in visual sensitivity and sensory overload when wearing (Precision Tinted) lenses.\" - Tony Attwood, Ph.D., Associate Professor at Griffith University in Queensland, Australia, The Complete Guide to Asperger's Syndrome.<\/p>\n<\/div><\/div>\n\n

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[1] Luhovschi C, Kobylinska L, et al. Neuronal Hyperconnectivity in patients with autism spectrum disorders. Romanian Journal of Child and Adolescent Psychiatry. 2014 V2-2 J-D<\/a><\/span><\/p>\n

[2] Ludlow AK, Wilkins AJ, Heateon P. The Effect of Coloured Overlays on Reading Ability in Children with Autism. 2006 Journal of Autism and Developmental Disorders DOI 10.1007<\/a><\/span><\/p>\n

[3] Evans JW, Allen PM, Wilkins AJ. A Delphi study to develop practical diagnostic guidelines for visual stress. Journal of Optometry 2017 10,161-168<\/a><\/span><\/p>\n

[4] Ludlow AL, Taylor-Wiffen E, Wilkins AJ. Coloured Fitlers Enhance the Visual Perception of Social Cues in Children with Autism Spectrum Disorders. International Scholarly Research Notices: Neurology 2012 298908<\/a><\/span><\/p>\n<\/div><\/div>\n<\/div>\n\n

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Note:<\/h3>\n<\/div><\/div>\n\n

When visual difficulties are reported, a full optometric evaluation is required to identify, treat or rule out issues of eye health, refraction correction or neuro-optometric problems prior to a Visual Stress assessment. While neuro optometric difficulties and Visual Stress are independent conditions, they often co-occur and can be accommodated with combined treatments.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n

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