Ocular Movements

Ocular movements are effected by the contraction and relaxation of the extraocular muscles. This results in simultaneous movement of the eyes up or down or from side to side, as well as in convergence.

Assess Eye Alignment

Alignment of the eyes is seen by observing the location of reflected light on the cornea. The penlight should be held directly in front of the patient. If the patient is looking straight ahead into the distance, the light reflex should be in the center of each cornea. If the light falls in the corneal center of one eye but is displaced away from the corneal center in the other eye, deviation of the eye exists.

LEFT

RIGHT

SCOTOMATA LEFT RIGHT

Optic

nerve

Optic

chiasm

Optic

RIGHT

Lower occipital cortex Upper occipital cortex

Blind eye

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