Visual Stress & Colorimetry

Do you or your child have difficulty reading or suffer from migraines?


Precision tints or coloured overlays could be the solution for you.

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colorimery testing visual stress

What is Visual Stress?

Visual stress is a term used to describe visual discomfort and perceptual distortions in text and is suffered by many people who struggle with reading.


The condition is estimated to be present in approximately 40% of poor readers and 20% of the general population.


When thinking of children, in a classroom of 25 children, that would suggest that 5 children could be suffering from Visual Stress.

Individuals who find reading tiring and unpleasant, are suffering from visual stress.


They have to put a lot of effort in to achieve the same results as their peers.


However, many of these people could be helped by overlays or Precision Tinted Lenses.

Frustration and low self-esteem can occur in children who are underachieving due to Visual Stress, so early diagnosis of the problem is essential.


The longer it takes to identify and remedy Visual Stress, the greater the loss of confidence that can result.

Many individuals who suffer from visual stress believe the symptoms they experience on the page are “normal” and experienced by everyone.


That is until someone shows them an appropriate colour overlay and they realise that reading can become more comfortable - even enjoyable!


Signs of Visual Stress

Only one or two of the signs of Visual Stress may be present.

  • Holding books nearer or further away than usual

  • Fidgeting when trying to read or concentrate

  • Using a finger as a marker on the page

  • Skipping words or lines

  • Frequently re-reads the same line

  • Rubbing eyes or blinking excessively

  • Reduced comprehension of reading content

  • Frustration and low self-esteem

Symptoms of Visual Stress

Symptoms can occur despite normal vision and can include:

  • Movement of the printed text

  • Blurring of print

  • Letters changing size or shape

  • Patterns in the print (sometimes described as rivers or worms)

  • Halos of colour surrounding letters or words

  • Tiring easily whilst reading

  • Headaches, visual discomfort or even migraines

  • Red, sore, watery eyes

Frequently Asked Questions