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Retina   /rˈɛtənə/   Listen
noun
Retina  n.  (Anat.) The delicate membrane by which the back part of the globe of the eye is lined, and in which the fibers of the optic nerve terminate. See Eye. Note: The fibers of the optic nerve and the retinal blood vessels spread out upon the front surface of the retina, while the sensory layer (called Jacob's membrane), containing the rods and cones, is on the back side, next the choroid coat.






Collaborative International Dictionary of English 0.48








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"Retina" Quotes from Famous Books



... throws over imperial Rome. Above, that canopy of translucent blue, iridescent and scintillating with a thousand colours, flicks of emerald and crimson, of rose and of mauve that merge and dance together, divide and reunite before the retina, until the gaze loses consciousness of all colour save one ...
— "Unto Caesar" • Baroness Emmuska Orczy

... by turning a strong light sideways into my eye. And the explanation of it was quite simple. The retinal vessels stand out slightly in relief, and thus a perfect shadow of the system is cast on the retina. It was this shadow I saw, and the white screen was merely a convenient background for it. I don't know if I ...
— Cleo The Magnificent - The Muse of the Real • Louis Zangwill

... coming," and buttoning up his coat, he whisked himself from the room, and Barclay, looking out of the window, watched the two forms as they disappeared in the dusk. But appearances are so deceptive. The truth is that what he saw was not there at all, but only appeared on his retina; the two forms that he seemed to see were not shivering through the twilight, but were walking among dahlias and coxcombs and four-o'clocks and petunias and poppies and hollyhocks on a wide lawn whereon newly set elm trees were fluttering their faint green foliage in the summer breeze. Yet ...
— A Certain Rich Man • William Allen White

... minute particles he termed corpuscles. In the work just referred to regarding this matter, he asks the question, "Are not rays of light very small bodies emitted from shining substances?" These small particles or corpuscles were supposed by him to actually strike the retina of the eye, and so produce the sensation of Sight, in the same way that odorous particles entering the nostril, come into contact with the olfactory nerves and produce the sensation of Smell. In order, however, to account for certain phenomena of light, he was compelled to postulate ...
— Aether and Gravitation • William George Hooper

... record my literary calamity as a warning to my sedentary brothers. When my eyes dwell on any object, or whenever they are closed, there appear on a bluish film a number of mathematical squares, which are the reflection of the fine network of the retina, succeeded by blotches which subside into printed characters, apparently forming distinct words, arranged in straight lines as in a printed book; the monosyllables are often legible. This is the process of a few seconds. It is remarkable ...
— Literary Character of Men of Genius - Drawn from Their Own Feelings and Confessions • Isaac D'Israeli


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