Light First Enters The Eye Through The

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Light First Enters The Eye Through The

the cornea. 2. The retina is the light absorbing layer of the eye that contains the rod and cone cells. 3. A cell in the retina that is responsible for black and white vision, as well as night vision is a rod. 4. A cone is a cell in the retina responsible for color vision. 5. rhodopsin is a protein found in rods; it is needed for night vision. 6. A type of preformed vitamin A, retinal is found within the rhodopsin protein. 7. The name for the family of substances that are all types of preformed vitamin A is retinoids. 8. The process called bleaching occurs when light enters the eye and interacts with and changes rhodopsin, causing dissociation of vitamin A from rhodopsin.
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light contacts eye --> Light enters the eye through the cornea. --> Light travels to the macula within the retina--> Rhodopsin absorbs light, and the retinal changes shape. --> Retinal detaches from the rhodopsin, and some retinal is lost. --> Retinol is converted to retinal, which gets reincorporatedinto rhodopsin. --> Light-absorbing capabilities of proteins are regenerated
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