01:146:245 Lecture Notes - Lecture 1: Vitreous Body, Ciliary Muscle, Extraocular Muscles

• School: Rutgers University
• Department: Cell Biology and Neuroscience
• Course: 01:146:245
• Professor: Professor Wilhelms

Document Summary

~innermost layer is retina, has neurons sensitive to light. ~next layer is uveal tract, uveal tract has a bunch of stuff in it. Has choroid in the posterior rich capillary bed and a lot of melanin. Anterior part of uveal tract is ciliary body (ring of muscle around lens and iris. ~but at the front of the eye, sclera turns into cornea, transparent. ~6 extraocular muscles hold the eyeball in place in the orbit of the skull. ~vitreous humor is between lens and retina, gives most of the eye volume, gives spherical shape of eye. ~cornea and lens refract light to focus it on retina. ~cornea does most of the refraction, lens does some. ~lens is normally round, need to use ciliary muscles to pull it out flat. ~the actual ciliary muscle is connected to lens by the anterior zonule fibers. ~accommodation changing refractive power of lens by contracting/relaxing ciliary muscle.