From very slightly to severely. For those who are only very slightly affected, tinted lenses gives a person an edge in completing their work. They are able to work quicker, use less effort and although already achieving excellent marks, can even attain higher marks. Even someone who is slightly affected is benefitted by tinted lenses.

For those who are severely affected, where it feels like a brick wall stops them from learning, tinted lenses can have a dramatic, positive influence on a person’s ability to learn.