blink

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blink

(blink),
To close and open the eyelids rapidly; an involuntary act by which the tears are spread over the conjunctiva, keeping it moist.
Synonym(s): wink

blink

(blingk)
To close and open the eyes rapidly; an involuntary act by which the tears are spread over the cornea and conjunctiva, keeping it moist.

blink 

A temporary closure of the eyelids (usually of both eyes). Blinks are usually involuntary but may be voluntary. The frequency of blinking is conditioned by a number of external and internal factors, e.g. glare, wind, emotion, attention, tiredness, etc. Normal blink rate is about 10 blinks per minute, although there are wide variations. The duration of a full blink is approximately 0.3-0.4 s. Blink rates are often altered with contact lens wear and in some diseased states (e.g. chalazion, Graves' disease). See corneal reflex; wink.

blink

the involuntary movement of one or both eyelids of both eyes simultaneously. The frequency varies between species. Cats blink the least, with the possible exception of owls. In birds it is the lower eyelid which is moved up to meet the upper lid. In mammals the upper eyelid is moved down to meet the lower lid. The blink is a part of several reflexes including the palpebral, conjunctival and menace reflexes.

blink reflex
see blink response.
blink response
absent in lesions of the ophthalmic branch of the trigeminal nerve. Called also blink reflex.
References in periodicals archive ?
Blinking back tears, bride-to-be Carol Hyde today relived the moment she lost her fiance.
When UCLA and USC meet on the football field, you never can be sure who'll wind up blinking in the spotlight's glare and who'll merely be blinking back tears.
He was blinking back questions, using the quizzical smile he saves up for feigning surprise.
That's when my heart snaps in two and I'm blinking back my tears trying not to look like a total fruit cake of a mother who's about to lose the plot.
Dressed in a black T-shirt and blinking back tears, Margaret said: 'Please don't bring the troops to Baghdad.
They were blocked up after a bomb attack across the street during the Troubles but are now blinking back to life.
Blinking back the tears, she announces her pretentious plans to serve her country through her art.
The luckless woman, her indicator light blinking back tears of fury, was left to bemoan the end of "Ladies first" and all that.
Blinking back the tears and towelling his face dry, he somehow managed to hold himself together to serve out for a win that saw the Centre Court erupt in celebration.
BLINKING back tears, a terrified youngster apologised to rescuers yesterday after his mates locked him in a safe.
Blinking back the tears, he said: "All of us realised there are not many more important things in life than the family.
WHEN Kate Spall first heard that music legend Tony Wilson was denied Sutent, she found herself blinking back angry tears.