Eye internal layers fuctions

Sclera

protects, maintains shape, anchors extrinsic eye muscles.

cornea

transmits and refracts light, avascular and sensitive

choroid

nourishes outer retina and absorbs stray light

ciliary body and muscle

muscle changes lens shape for accomodation

ciliary processes

produce aqueous humor, anchor zonular fibers

suspensory ligaments or zonar fibers

hold lens and transmit tension that change its shape

iris and pupil

iris changes pupil diameter to regulate incoming light

lens