Vision is basic to learning and your child's most dominant information getting system. Vision is a mental act involving determination of object placement in space, form, distance, color, control of speed and direction of movement. These abilities, once thought to be inherited, are also learned, developed and changed throughout life. Learning takes place more easily when using both eyes together efficiently and combining visual information with that received through other senses, such as hearing, touching and moving. Visual problems, such as not using the eyes as a team, interfere with information processing and learning.
Vision is a complex process.
Seeing clearly, measured by the Snellen test, is only one part of visual information gathering and understanding. To read, understand and solve mathematical relationships, or catch a ball in gym class, your child need not only clear sight, but also much more. However, they lack other important visual skills, ignored by the Snellen Test. Using one eye and mentally shutting off the other is Suppression. Correcting acuity with lenses is only one reason for prescribing glasses.