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 ?
Lee Quinn blinked back tears fighting to be strong for his mum, Chrissie.
The broadcaster blinked back tears after one guest, former poet laureate Andrew Motion, read her a short poem during her final appearance ahead of the show's move to Salford.
Teresa blinked back tears as she added: "I tried to be there for him, to say to him that football wasn't everything, that there are many beautiful things in life.
TOUGH-tackling Toon ace Geremi blinked back tears today and told of his personal hell after his sister was killed by cancer.
Ray blinked back tears as he recalled how his wife had reacted to the terrifying ordeal.
A GULF War widow yesterday blinked back tears as she told a US Congressional committee sitting in Westminster of her husband's slow death.
I found myself staring at it and then not being able to look, just in case those eyes blinked back at me.
Soccer favourite John Beresford today blinked back tears to lead tributes to a tragic amateur player killed by a train.
Carol Naughton, chairman of Birmingham CND, blinked back tears as she passionately urged the crowd to keep pressure on the Government to stop military action in the Gulf.
Colin, ex-Blackburn Rovers and Scotland skipper, blinked back tears during a poignant tribute to Denise, who died aged 43 from an infection following botched cosmetic surgery.
Firefighter Andy Horan, of Engine 80, blinked back a tear as he walked toward The Pit with FDNY's 16th Battalion.
Chief executive Mr Wyatt blinked back tears as he said: "Ultimately I blame myself.