Children are born with the capacity to perceive changes in brightness as well as adults.
Sadly the child himself and the adults around him, may misinterpret his failure to acquire reading as an indication of low intelligence rather than to an eye problem.
Visual Perceptual Skills: In terms of visual perceptual processes, the skills I have chosen to discuss are: 1. Brightness Discrimination; 2. Pattern preference; 3. Depth Perception; 4. Size and Shape Constancy; 5. Position in Space, and Spatial Relations; and 6. Pattern Recognition.
1. Brightness Discrimination: There are three startling things about brightness discrimination in infants. One, is that infants can discriminate minute changes in brightness as well as adults. The second is that they (the researchers) can discover this.