Describe the pathway of accommodation reflex
Following are the structures through which light passes
Light falls on retina will pass through the following
Light falls on retina will pass through the following
- Optic nerve
- Optic chiasma
- Optic tract
- Lateral geniculate body
- Optic radiation
- Occipital cortex
- Frontal eyefleld area or area 8 through superior longitudinal association tract
- Nucleus for medial rectus produces medial convergence of eyeball.
- E W nucleus produces miosis.
- Nucleus of Perlia contraction of cillaris muscle and thus, anterior convexity of lens increases.
- From oculomotor (E.W) nucleus, the pathway for accommodation reflex is the same as light reflex.
- Frontal lobe
- Frontal eye fields
- Cortico mesencephalic fibers through internal capsule
- 3rd cranial nerve nucleus
- Medial rectus nucleus and Edinger Westphal nucleus
