Some signs of visual disorders include having difficulty learning to read, needing to use a finger as a guide when reading, and holding written material too close to the face when reading. Correction is possible. The earlier the vision problem is discovered, the less your child will struggle, but it is also never too late, even for adults. A complete developmental vision evaluation identifies problems with focusing ability, eye movement control, eye teaming and depth perception, visual perception, visual information processing, retained primitive reflexes, and the ability to sustain visual performance adequately to meet the visual demands of the classroom.