human eye - cu blue eye, dilated pupil contracts, eyelid closes - dilation stock videos & royalty-free footage00:18
dilation and contraction of the pupil of the eye in response to changing light levels. the aperture of the pupil is controlled by the muscles of the iris, the coloured region surrounding the eye - dilation stock videos & royalty-free footage00:07
human eye - cu brown eye, dilated pupil contracts, eyelid closes - dilation stock videos & royalty-free footage00:07
extreme close up slow motion human eye with pupil dilating + expanding - dilation stock videos & royalty-free footage00:09
slo mo ld pupils of a brown eye constricting and dilating - dilation stock videos & royalty-free footage00:19
human eye - cu blue eye, dilated pupil contracts, eyelid closes - dilation stock videos & royalty-free footage00:20
bcu brown eye with dilated pupil, pupil contracts, eyelid closes - dilation stock videos & royalty-free footage00:15
human eye - cu blue eye, dilated pupil contracts, eyelid closes - dilation stock videos & royalty-free footage00:21
human eye - bcu blue eye, dilated pupil contracts, eyelid closes - dilation stock videos & royalty-free footage00:20
a computer animation shows the pupil of a human eye dilating and contracting. - dilation stock videos & royalty-free footage00:16
asian chinese senior man having an eye exam at ophthalmologist's office - dilation stock videos & royalty-free footage00:15
asian chinese senior man having an eye exam at ophthalmologist's office - dilation stock videos & royalty-free footage00:08
asian chinese senior man having an eye exam at ophthalmologist's office - dilation stock videos & royalty-free footage00:40
police demonstrate drug driving tests; england: london ext/itn gvs policeman demonstrates test for drug driving/ testing for pupil dilation/ man... - dilation stock videos & royalty-free footage10:37
coroner says george michael died of natural causes; england: london: int june davison interview sot - re dilated cardiomyopathy - dilation stock videos & royalty-free footage00:21
senior medical doctor examining male african patient's eyes - dilation stock videos & royalty-free footage00:20
gabriel mascaro on challenging gender and dilating gender at 'neon bull' interview - 72nd venice film festival at palazzina g on september 04, 2015... - dilation stock videos & royalty-free footage00:48
a space probe appears to freeze as it is sucked into a black hole - dilation stock videos & royalty-free footage00:16
close-up of a man's shocked brown eye looking around - dilation stock videos & royalty-free footage00:16
macro shot of blue eyed female falling into frame - dilation stock videos & royalty-free footage00:07
macro shot of blue eye dilating as person falls to floor - dilation stock videos & royalty-free footage00:07
female drug addict taking pills while lying on the floor - dilation stock videos & royalty-free footage00:10
zoom in shot of a female drug addict falling to the floor - dilation stock videos & royalty-free footage00:06
zoom in shot of a female drug addict falling to the floor - dilation stock videos & royalty-free footage00:21
unconscious female drug addict falling to the floor - dilation stock videos & royalty-free footage00:07
close up of blue eyed female opening eyes after becoming conscious - dilation stock videos & royalty-free footage00:07
female drug addict falls to floor overdosing on pills - dilation stock videos & royalty-free footage00:07
close up of a female eye as they fall to the ground - dilation stock videos & royalty-free footage00:11
female catching first breath after being passed out - dilation stock videos & royalty-free footage00:06
tech halo: circular particle emission resembling dilating pupils - dilation stock videos & royalty-free footage00:12
tech halo: circular particle emission resembling dilating pupils - dilation stock videos & royalty-free footage00:12
tech halo: circular particle emission resembling dilating pupils - dilation stock videos & royalty-free footage00:12
lid of eye lifting to reveal brown pupil and black iris - dilation stock videos & royalty-free footage00:02
extreme close up eye blinking with pupil dilating and expanding - dilation stock videos & royalty-free footage00:11
aerial photograph of empty land by the edge of the woods - dilation stock videos & royalty-free footage00:17
overlooking the factory and the open space ready to expand - dilation stock videos & royalty-free footage00:11
skyline of modern urban architecture in fujian province, china - dilation stock videos & royalty-free footage00:17
grey and white cat with a round face and large pupils looks around. - dilation stock videos & royalty-free footage00:06
black cat laying on the bed hisses at the girl holding her hand out. - dilation stock videos & royalty-free footage00:06
haemorrhoids. endoscopic view of haemorrhoids in a patient s rectum.. - dilation stock videos & royalty-free footage00:13
ecu chameleons eye, pupil dilating, botswana, africa - dilation stock videos & royalty-free footage00:24