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chaism is

12 mm wide , 8 mm long in anteroposterior direction and 4 mm thick

macular fibers

located centrally in optic nerve and has 80-90% of total volume of optic nerve and chiasmal fibers

optic nerve fibers

53% crossed , 47% uncrossed

lateral geniculate body

70% of optic tract fibers have 6 alternating layers of gray and white matter

layers

1 , 4 , 6 axons of contralateral optic nerve and 2 , 3 , 5 ipsilateral