Reading is one of the most important skills that children need to acquire. Reading has a fundamental impact on basic skills in the overall learning process: how to count, write, understand and process sentences. It is essential in all class interactions, at school and in other environments.

Unfortunately, the difficulties in reading are common  in the age of primary school children. Those who suffer from childhood of reading disorders often do not recover by the time the delay in the preparation and they bring their own problems with them throughout the school career. 

Behavioural problems and truancy in secondary school are often caused by frustration due to failure in reading. Therefore it is important to be aware of existing and readily applicable methods that can help children to improve their reading skills, while reducing stress. Reading involves complex visual and cognitive processes. The printed text is a set of letters scattered on horizontal lines; sometimes the repetition of groups of letters can create unusual visual effects, such as illusory colours, glitter effect and vertical movements around the body of the text. These illusions are frequently  ccompanied by somatic reactions, such as nausea, eyestrain, headaches and reading fatigue. Readers who are suffering from these symptoms complain of "blinding whiteness" of the page, the feeling that the letters "seem to move on the page" and are "out of focus". 

These unpleasant experiences are indicated with the name of visual stress. Visual stress is not just refer to the perceptual distortion, and the difficulties that may be aroused when reading, but also to similar experiences in other environments where they appear so annoying like stripes, dots, geometric patterns or flickering lights. Watching television, computer screen or even whiteboards can be visually stressful in these cases. Visual stress is also known as Meares-Irlen Syndrome, or Scotopic Sensitivity, and is also frequently reported as Visual Dyslexia. It is believed that this disorder is caused by a specific wavelength, included in the color spectrum, which stimulates too much some parts parts of the visual cortex, disturbing the perception of the image of black text on a white background. 

By changing the colored background with a tint that filters the length of disruptive wave, it is possible to improve drastically some aspects of visual perception involved in reading and writing. When a person identifies the correct filter’s tint, attention time, speed and fluidity in reading and understanding of the text can be improved. 

Raibow lenses are available as:

  • plano filters
  • clip on
  • corrective lenses


Colour blindness is a disorder that involves a wrong perception of colors by the subject. This disorder is caused by hereditary alteration of the photoreceptors, and affects to a greater extent the male patients. The color blindness is generally distinguished in achromatopsia, the deficit in the vision of all three primary colours (red, green and blue), and dischromatopsy, which involves a deficiency in the vision of one of the three primary colours.

The diagnosis is performed by a chromatic examination of colour recognition. The most used test is the Ishiara Test or, for greater depth, the Farnsworth test. 

The Rainbow lenses are photoselective filters that allow to re-synchronize and change selectively, in a dynamically balanced format, the wavelength for each colour of light that enters into both eyes, allowing to  iscriminate and improve the colour perception. Clinical studies show that 95% of patients reported a significant improvement in colour vision, that appear brighter, vivid and rich in nuances for the first time.

Rainbow photo-selective filters can significantly:
- Improve colour perception
- Make colours brighter and clearer
- Allow viewing of colour gradients
- Improve the ability to recognize colours properly

Rainbow colour blindness do not cure colour blindness

RAINBOW lenses available:
- corrective lenses
- plano filters
- clip-on