Converge eyes-co-contract medial recti

• Converge eyes-co-contract medial recti

• Focus lens- ciliary body relaxation

• Limit light- Pupil constriction

• Binocular Image processing is to geniculate and then cortex
• Frontal eye-field of cerebral cortex receives visual imagery from the calcarine.
• The frontal eye fields project to the abducens nucleus and 3rd nerve nucleus for horizontal gaze.
• Accommodation requires co-contraction of the medial recti muscles via the 3rd nerve.
• The pupils constrict via the Edinger-Westphal nucleus to ciliary ganglia.
• The lens thickens by Edinger-West-phal relaxation of the ciliary body input from ciliary ganglion.