4.  What causes something like this?


Some eye conditions occur in association with disease processes. If this seemed likely then this would have been reported as a possibility at the time of the optometric examination. If disease is not the cause there are commonly other possible causes, such as:

  • inadequate sensorimotor development
  • trauma to the nervous system (i.e., birth injury, brain trauma, closed head trauma, previous illness, etc.)
  • stress and environmental interactions such as inappropriate posture, lighting and task demand.

Some visual problems appear genetic or at least have contributing hereditary factors such as strabismus (crossed-eyes, wandering eyes). Most are a combination of genetic predisposition and environmental influences, though according to most recent studies environment appears to be playing a larger and larger role in our developmental make-up. Sometimes our vision becomes less comfortable as our eye control (such as focusing and eye-teaming) skills have become more conscious and tiring, particularly when we are not performing on a task as well as we should. If we demand more of these skills than we can accomplish, we can develop sub-conscious adaptations to cope – often to our detriment – similar to a person who tries to concentrate harder and finds themselves less successful at performing a task such as reading.

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