Visual disturbance and tiredness when reading is a common problem for people with dyslexia. Letters and words can appear to move on the page and this movement can make the words go in and out of focus, float on the page or drift up and down or sideways. The letters in the words may also move closer together or pull apart. Because the words never seem to remain fixed in one place, people with dyslexia often experience frustration while reading. In younger people, this frustration may cause emotional withdrawal, depression or behavioural issues in school.
Colour tints on the page are designed to help alleviate these problems, allowing for a more comfortable reading experience without tiring as quickly.