Episode 82 - Eye Anatomy
Released: Feb 27, 2017
Eyes
Your eyes are more complex than any camera on the planet!
Cornea: a concave lens on the front of your eye that focuses light
Iris: the colored part, a diaphragm that controls how much light comes in (the pupil is the hole the light enters = equivalent to the aperture of a camera)
Lens: the "focuser", uses a process called accommodation to focus near to far and make the image as sharp and clear as possible
Retina: the sensor, and sends signals to the brain to translate light into an images
The retina has 2 types of sensors: Rods - detect light intensity Cones - color differentiation Two special areas of the retina: Macula - right in the middle of the retina, they place that detects the most detail (that's why the center of your vision field is a clearer picture than the periphery) Fovea - the center of the macula, it contains cones (color sensors) only to aid in the translation of very fine details Support structures Extra-ocular muscles - allows your eyes to move around in their holes There are chambers of fluid that are between each structure of the eye, and that fluid helps hold nutrients that feed those parts, and remove waste Choroid: the layer that holds all the blood vessels that feed the eyes Sclera: the whites of your eyes, an outer coating that hold everything inside Conjuntiva: the mucus membrane that attaches the sclera to the eyelids; produces liquid for lubrication and trapping invaders PSA
Please don't vigorously rub or scratch your eyes, you could hurt them!
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Music Credits: “Radio Martini” Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/
