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 ?
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STARE at the face of little Lucas and behind the blinked back tears you see a look of total confusion.
TOUGH-tackling Toon ace Geremi blinked back tears today and told of his personal hell after his sister was killed by cancer.
Sub officer Mark Smith, who was called to the scene with Mr Miller, blinked back tears as he spoke of the respect and affection his colleague and friend of 25 years inspired.
The general and I just looked at each other and blinked back tears.
Lee Quinn blinked back tears fighting to be strong for his mum, Chrissie.
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.