NATS 1675 Lecture Notes - Lecture 28: Vitreous Body, Macular Degeneration, Aqueous Humour

• School: York University
• Department: Natural Science
• Course: NATS 1675
• Professor: Ruthanna Dyer

Document Summary

Se(cid:374)sor(cid:455) (cid:272)ha(cid:374)ges are(cid:374)"t li(cid:374)ked to (cid:272)og(cid:374)iti(cid:448)e de(cid:272)li(cid:374)e (cid:271)ut (cid:272)a(cid:374) (cid:272)o(cid:374)tri(cid:271)ute to it. Subtle, some begin as early as 45 and others not until later. Important to recognize that an older person may have sensory changes but they may not. Hearing loss occurs, vision changes but on individual basis. Change in normal vision: night vision, colour vision. Outer: cornea: transparent window into the eye. Can be donated upon death regardless of age and health as long as cornea is in good condition. Does(cid:374)"t ha(cid:448)e a (cid:271)lood suppl(cid:455), fe(cid:449) e(cid:454)(cid:272)eptio(cid:374)s (cid:271)ut ge(cid:374)erall(cid:455) the (cid:272)or(cid:374)ea (cid:272)a(cid:374) always be donated. Not o(cid:271)(cid:448)ious that the(cid:455)"(cid:448)e (cid:271)ee(cid:374) do(cid:374)ated after death, (cid:374)o (cid:272)ha(cid:374)ge i(cid:374) the (cid:449)a(cid:455) the eyes look; donation means two people have the opportunity to see depending on visual problem. Number of nerve endings: sclera: maintains globular shape of eyeball. White of the eye, has connective tissue that retains globe shape of eyeball to certain extent.