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Writer's pictureBy Kathleen Schubert (Actually Autistic, author of U Don’t Seem Autistic)

Unveiling the Connection: Why Irlen's Syndrome is Common in Autism


A woman with a headache

Welcome to our blog, where we delve into the fascinating world of autism and shed light on the intriguing link between autism and Irlen's syndrome. In this article, we'll explore what Irlen's syndrome is, why it commonly coexists with autism, and how it can be diagnosed and managed. Join us on this captivating journey of discovery!


What is Irlen's Syndrome?

Irlen's syndrome, also known as scotopic sensitivity syndrome or visual stress, is a perceptual processing disorder that affects how the brain processes visual information. It is characterised by difficulties in perceiving and processing certain visual stimuli, such as text, patterns, and colours. Individuals with Irlen's syndrome often experience symptoms like eye strain, headaches, light sensitivity, and reading difficulties.


The Connection with Autism:

Now, let's explore why Irlen's syndrome is commonly found in individuals on the autism spectrum. Autism, a neurodevelopmental disorder, affects various aspects of an individual's sensory processing, social interaction, and communication skills. Sensory processing differences are a hallmark of autism, and these differences can manifest in a range of ways.


One of the reasons Irlen's syndrome is common in autism is due to shared underlying neurobiological factors. Both conditions are believed to stem from atypical neural connectivity and processing in the brain. Individuals on the autism spectrum often have heightened sensitivity to sensory stimuli, including visual information. This heightened sensitivity can contribute to the development of Irlen's syndrome symptoms and its coexistence with autism.


Testing for Irlen's Syndrome:

Diagnosing Irlen's syndrome involves a comprehensive assessment conducted by a trained professional, such as an Irlen Syndrome Diagnostician or an optometrist specialising in the disorder. The assessment includes a series of tests and evaluations to determine the presence and severity of visual processing difficulties.


One common diagnostic tool used in assessing Irlen's syndrome is the Irlen's Color Sensitivity Test. During this test, individuals view specially designed coloured overlays or lenses while reading or looking at different visual stimuli. The goal is to identify the specific colours that alleviate symptoms and enhance visual perception. These personalised colour filters are then prescribed to the individual to help manage their symptoms effectively.


Addressing Irlen's Syndrome:

Once diagnosed, several strategies can be employed to address Irlen's syndrome and alleviate its impact on daily life. The most common approach involves the use of Irlen Spectral Filters, also known as Irlen lenses or overlays. These customised filters, prescribed based on individual needs, help optimise visual processing by reducing visual stress and enhancing clarity.


Additionally, individuals with Irlen's syndrome can benefit from environmental modifications. Simple adjustments such as optimising lighting conditions, using matte finishes on screens or paper, and avoiding visual clutter can significantly alleviate symptoms.


The fascinating connection between Irlen's syndrome and autism highlights the complexity of sensory processing differences in individuals on the autism spectrum. Understanding this coexistence allows for better identification, diagnosis, and management of visual processing difficulties in autistic individuals.


If you or someone you know is on the autism spectrum and experiences visual stress, consider seeking a professional assessment for Irlen's syndrome. By addressing Irlen's syndrome, we can unlock a world of improved visual perception, reduced discomfort, and enhanced quality of life.


Remember, every individual is unique, and by embracing and supporting these differences, we create a more inclusive world for everyone.

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