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light rays at the edges well, the image produced by the lens is blurry around the edges so the pupil constricts when one attempts to focus on nearby objects. Lastly, accommodation of the lens occurs. This is an alteration in the curvature of the lens that allows focus on a nearby object.
50:, in which the pupil dilates or constricts due to light is not usually called a "reflex", it is still usually considered a part of this topic. Adjustment to close-range vision is known as "the near response", while relaxation of the
65:, is the first of the three responses. This can be observed by the cross-eyed movement of the eyes when a finger is held up in front of a face and moved towards the face. Next, constriction of the pupil occurs. Because the
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In "the near response" there are three processes that occur to focus an image on the
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The pupillary reflex results in the pupil constricting (left) and dilating (right)
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95:(6th ed.). New York, NY: McGraw-Hill. p. 617.
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Anatomy & Physiology: The Unity of Form and
Function
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to view distant objects is known as the "far response".
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512:. You can help Knowledge by
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424:Ascending and Descending
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19:refers to one of the
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44:accommodation reflex
363:Vertical–horizontal
463:Auditory illusions
258:Impossible trident
48:pupillary response
38:These include the
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473:Tactile illusions
443:(2015 photograph)
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343:Schroeder stairs
318:Peripheral drift
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419:(1864 book)
323:Poggendorff
298:Oppel-Kundt
293:Necker cube
288:MĂĽller-Lyer
263:Irradiation
553:Categories
416:Spectropia
333:Rubin vase
283:McCollough
278:Mach bands
228:Ehrenstein
223:Ebbinghaus
188:Barberpole
163:Afterimage
78:References
27:function.
564:Eye stubs
468:Illusions
440:The dress
432:Waterfall
233:Flash lag
213:Cornsweet
198:Café wall
178:Ames room
156:Illusions
25:pupillary
559:Reflexes
218:Delboeuf
168:Ambigram
21:reflexes
451:Related
378:Zöllner
368:White's
303:Orbison
268:Jastrow
71:refract
69:cannot
403:Op art
358:Ternus
338:Sander
253:Hering
193:Bezold
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59:retina
508:is a
373:Wundt
328:Ponzo
208:Chubb
63:fovea
510:stub
248:Grid
148:list
97:ISBN
67:lens
42:and
506:eye
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