a circumference of a circle having a center at center coordinates of a pupil candidate and a predetermined radius are provided, and when the output of luminance difference calculation unit is larger than the predetermined threshold, the corresponding pupil candidate is determined not to be the pupil...
: a broad flat band of smooth muscle in the iris that surrounds the pupil of the eye Dictionary Entries Near sphincter pupillae sphincterotomy sphincter pupillae sphincter urethrae See More Nearby Entries Cite this Entry Style “Sphincter pupillae.” Merriam-Webster.com Medical Dictionary...
: the usually round opening in the iris that contracts and expands to control the amount of light entering the eye Etymology Noun Middle English pupille "a child under the care of a guardian," from early French pupille (same meaning), from Latin pupillus "a boy under the care of a gua...
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5.The postganglionic fibers of either division release neurotransmitters onto the smooth muscles of the iris to cause changes in the pupillary size. 6.Objective To investigate difference of metric ruler, videorefactor and pupillometer in measuring pupillary distance (PD). 目的比较米制直尺、电脑验...
Asian eyes stimuli used in the current study are controlled for a number of perceptual confounds (eye whites, iris, and pupil size), to further ensure that infants are responding to relatively subtle racial differences and not to coarse perceptual differences when processing own-race and other-ra...
There was no significant difference in central macular thickness and intraocular pressure pre and post-surgery. Complications included ovalization of pupil in 9.83%, hypotony in 1.63%, toxic anterior segment syndrome in 1.63%, cystoid macular edema in 11.47%, epiretinal membrane in 3.27%, and iris...
Bowie did not have different coloured eyes, but his left pupil was much larger and so appeared much darker. This is why Bowie is often mistaken for having heterochromia, (a condition which causes each iris to be a different colour.) Bowie's anisocoria was permanent and was the result of ...
The actions of the iris in each eye are yoked so that light directed into one eye results in pupillary constriction in both the illuminated eye (direct response) and the opposite eye (consensual response). The pupil changes diameter to maintain illumination of the retina in the optimal range...
This displacement was more marked dorsally where the iris billowed forward more prominently at the collarette region than at the iris root or pupillary margin (Figs 1 and 2). Medical management of acute ocular hypertension in a western screech owl (Megascops kennicottii) PXG was diagnosed when...