NROC64H3 Lecture Notes - Lecture 2: Pupillary Light Reflex, Ganglion Cell Layer, Retinitis Pigmentosa
Document Summary
Polarity of light birds use, humans cannot. Three concepts: reflection absorption refraction (transparent surfaces) - depends on which of the two mediums denser. Cornea is important for the focus of light only the cornea cannot change shape (like the lens) which is also important for focus. Helpfullness of iris you can tell if the person is looking at you or what they are looking at (difference between iris and sclera) Contraction of the ciliary fibers stretches the lens flat. Pressure of vitreous humor gives the eye round shape. Strabism: one eye becomes weak and affects oculomotor so you have double vision so you pick one eye causing oculardominance and eventually that becomes blind (the week eye) (cross eyes) Cataracts - clouding of the lens needs to replace the lens (artificial lens) Glaucoma the vitreus pressure if there is too much then you get glacoma and this is usually in the blind spot so usually don"t even notice.
