The ability to align both eyes on a visual point and combine the visual images seen by each eye into a single multidimensional image.

The muscles of the eye are used for alignment. The following image shows the muscles of the eye used for binocularity:

A person with poor binocularity may have some or all of the following symptoms: unstable vision, double vision, blurring, light sensitivity, headaches, dizziness, motion sickness, eye fatigue, poor depth perception, soreness or discomfort around eyes, poor hand-eye coordination, an inability to concentrate and a high level of distractibility.

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