Strabismus is when the two eyes fail to work as a team and maintain proper alignment. (in the image look for the white spots in each eye)

This can cause blurred vision.

One eye looks straight at an object, while the other is misaligned outward (exotropia), inward (esotropia, cross-eyed), upward (hypertropia) or downward (hypotropia).

To avoid blurred vision the brain ignores the visual output from the misaligned eye, this usually leads to amblyopia (Lazy eye)

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