Spectrum Learning logo

Spectrum Learning


Asia’s First Neurofeedback Centre (Established 1995)


Home | About Us | Contact Us| Testimonials | Affiliates

Website Terms and Conditions | Privacy Policy | Site-map

© 1995 - 2018 Spectrum Learning Pte Ltd All Rights Reserved | Singapore

36 Purvis Street, #02-11, S(188613) SINGAPORE

>Tel: +65-68349476       Email: Jess@spectrumlearning.com.sg


Share on Facebook

Call or Email


to arrange for a free consultation

+65 68349476


What is Irlen Syndrome?

Irlen Syndrome is also known as Scotopic Sensitivity Syndrome (SSS).

Our vision, or what we ‘see’ in daily life, is a result of our mind’s perception. Sensory information, which comes in the form of light entering our eyes (in the case of sight), bear no significant meaning to us untill it is processed into useful perception by the brain. Irlen syndrome is a disorder of such perceptual processing.  

Irlen Syndrome, or Meares-Irlen Syndrome, is a visual disorder, defined by reading and writing based difficulties. People suffering from Irlen would typically experience debilitating colour and word overlaps while on-task intricate reading and writing activities. It is however, crucial to note that Irlen syndrome is not an optical disorder. Myopia, for example, is an optical disorder which stems from ill-adjusted retinal lenses, and like all optical disorders, are defined by issues with the initial capture of light in the eyes. Visual perceptual disorders, such as Irlen, are neurological disorders, where the brain fails to properly process the sensory information captured in the eyes into useful, meaningful information for us to use.

What is causing my Irlen Syndrome?

Much research is still on-going to better understand Irlen syndrome. But the most accepted understanding of its cause is that sensory information from the eye is not reaching the brain on time. This is a result of hypersensitive visual pathways, both in and leading to the brain; Because the brain processes visual sensory information (received from the eyes) into useful visual perceptions, it needs to selectively filter out ‘bad’ or unwanted information entering the eyes. With hypersensitive visual pathways, too much information is accepted into the brain’s visual processing, thus causing ‘wrong’ visual reconstructions, such as gaps in wrong spots and blurred outcomes.

The disorder is manifested worse when the problem lies with neural systems reacting inappropriately to certain wavelengths of light; On man-made artefacts, such as a piece of writing on paper, limited colours are used, and visual-sensory information entering the eyes would be limited to only certain wavelengths of light. When that happens, much of the information arriving in the brain for processing would be deemed redundant and filtered away in an Irlen syndrome sufferer, resulting in blotches and spots of emptiness in vision.

How can I tell?

At Spectrum Learning, we offer various assessment techniques that peer into the brain and determine if our clients are susceptible to Irlen syndrome. The Brain Mapping Assessment (QEEG) will be used to identify locations of the brain that are hyperactive, with emphasis on the visual-cortical areas. The assessment results will help our therapists form a holistic understanding of our clients’ wellbeing, and be used as an integral component of their individual case profile. Personalized training protocols for subsequent Neurofeedback therapy will be also be subsequently formulated based on the same profile.


The diagram above shows a spectral chart from a Brain Mapping or QEEG analysis. The spike at 7.08 Hz is unusual. This is a 9 year old girl who sees words jumping around when she reads.

Hair Analysis (HTMA) is another integral assessment technique that we utilise. Via HTMA, Spectrum therapists would be able to look into our clients’ biochemistry make-up, and diagnose any unhealthy underlying nutritional imbalances. Most importantly, it allows us to determine if your Irlen syndrome symptoms are aggravated by your diet. Blood and Urine Tests serve the same purpose, painting a clearer picture of your health status. For example, excessive neurotransmitters found in your system might be a mitigating factor to the hypersensitivity in the neuro-visual pathways.

It is essential that the individual is healthy and chemically well-balanced in order for subsequent therapy to fulfil its desired effect.

What can be done?

Spectrum Learning will refer all suspected Irlen clients to the Irlen Dyslexia Clinic in Singapore to be evaluated accordingly and be prescribed the appropriate lens.

In addition to the use of Irlen lens for Irlen Syndrome, clients can also benefit from doing neurofeedback to improve their focus and attention.

Besides therapy, Spectrum Learning also offers nutritional interventions. Certain nutritional imbalance or excess in toxic elements can lead to learning difficulties. Our biological tests will indicate the type of nutrients your child needs and whether there is a need for detoxification.

Our Goal

With the combination of Irlen lens, our in-house Neurofeedback therapy and nutritional interventions, our ultimate goal is to alleviate the symptoms of Irlen syndrome and help our clients take on more wholesome lifestyles. Through these interventions, our clients will learn how to normalize and control visual processes in the mind, and our nutritional regimes will also help you to be in an optimal state for therapy.

Irlen Syndrome


Brain Mapping - QEEG

Brain Mapping (QEEG) is a safe and non-invasive brain imaging technique. It measures brain waves (EEG) that the brain sends out from at least 19 locations simultaneously.

Careful analysis of these brains waves (EEG) can reveal information on how one is using his/her brain. It can also tell us the maturity of different parts of the brain. It is often used to investigate if there are any hidden seizures.

Read more …

Learning Difficulties

Irlen Syndrome/Scotopic Sensitivity Syndrome

Intervention Program

Finding the Causes

Most clinicians do not bother about the causes as diagnosis is based on behavioral symptoms …   

At Spectrum Learning, we have been investigating the possible causes …

Related Links:

Conventional Tests and Assessments

We provide :