BMS 870 Lecture Notes - Lecture 11: Rhodopsin, Scattering, Far-Sightedness
24 Dec 2017
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Document Summary
Contains photoreceptors convert light e to neural activity. First synaptic relay station in the primary visual pathway. Visual info ascends to cortex -> interpreted and remembered. Uv rays used by insects to navigate their way to flower. Optics - study of light rays and their interactions. Reflection - bouncing of light rays off surface. Absorption - transfer of light e to particle or surface. Refraction - bending of light rays from one medium to another. Pupil - opening/hole of eye where light enters. Cornea - glassy transparent external surface of eye. Bending happens here bc light air -> water. Optic nerve - bundle of axon from retina. Choroid (vascular layer) - contains blood supply to eye. Retina (nervous layer) - functional neuronal layer w/ rods + cones. Posterior chamber - vitreous humor (grey bc melanin). Glaucoma - fluid doesn"t drain through something schlem = intraocular pressure = pushes structure back. When muscles contract, the shape of lens changes.
