To read well your eyes must be working optimally. That is why I am peering at the screen through my new glasses now!
So the first step (which should be routine anyhow with any child) is to get a complete checkup with a good optician.
But beyond this, there is a syndrome that some opticians may not check for, where the eye is sensitive to the contrast of a pure black on a white background. It is a bit like blue on red for the rest of us. Here is an example of that:
For me that is very hard to read. Some people find the same effect with black text on a white background.
If your child complains of "the text moving around", that will be the reason.
The eye actually begins processing the visual image that is projected onto the retina while it is still in the eye. In fact the eye is effectively a part of your brain that has extruded itself out of the skull (freaky eh?!).
One of the most important elements of processing that happens in the eye is to look for shapes and the edges of shapes. There are around 100 million rods and cones in each retina and only 1 million neurons in each optic nerve. So the eye is aggregating the individual rods and cones and it is in the aggregating process that the eye is very sensitive to changes in intensity.
If it is too sensitive to a black/white contrast, you will get this effect, known as contrast sensitivity.
Symptoms of Contrast Sensitivity
Some of the key symptoms are:
- Sensitivity to strong sunlight and flourescent strip lights
- Complaining about the text moving
- Complaining about distortions of the page
- Finding larger text easier (this can be related to eye-tracking too)
- Eyes watering while staring at computer screens
- Getting headaches while trying to read or do mathematics
The Solution To Contrast Sensitivity
If you feel that your child may be suffering from this issue it is essential to get a test done by a qualified specialist. If you would like us to help you find a behavioural optometrist in your area, please contact us.