eye 1a:  1 optic nerve,  2 blind spot,  3 fovea,  4 sclera,  5 choroid,  6 retina,  7 ciliary body,  8 posterior chamber,  9 anterior chamber,  10 cornea,  11 lens,  12 iris,  13 suspensory ligament,  14 conjunctiva,  15 vitreous humor