Strabismus is a misalignment of the eye which can cause a permanent visual problem if not corrected early in life. Amblyopia, lazy eye, occurs when one eye is weaker than the other and the child shows preference for the stronger eye. Several screening devices including external examination of the eye, ability to track, a cover test, acuity tests, and stereoscopic tests can detect strabismus and amblyopia at an early age. Treatment for strabismus and amblyopia include patching therapy, use of glasses, surgery, orthoptics, CAM vision stimulator, or a combination of these techniques.
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