Comparative Neuro-Ophthalmology - North Carolina State ...

Ciliary Body Innervation andAccommodation• Postganglionic efferentparasympathetic throughshort ciliary nerves• Postganglionic efferentsympathetic through longciliary nerves(disaccomodation)• Longitudinal, radial, circularciliary body mm.• Primates=cholinergic stimulation⇒ ciliary mm. contraction⇒relaxation of zonules ⇒increased axialdistance/curvature(disaccomodation occursthrough sympatheticinnnervation causing opposite)• Carnivores (cat, raccoon,groundsquirrel)=accommodationthrough anterior change in lensposition within eye (“translation”possible due to morelongitudinal mm.)