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Blinking is a bodily function; it is a semi-autonomic rapid closing of the eyelid. [1] A single blink is determined by the forceful closing of the eyelid or inactivation of the levator palpebrae superioris and the activation of the palpebral portion of the orbicularis oculi, not the full open and close.
The corneal reflex, also known as the blink reflex or eyelid reflex, [1] is an involuntary blinking of the eyelids elicited by stimulation of the cornea (such as by touching or by a foreign body), though it could result from any peripheral stimulus. Stimulation should elicit both a direct and consensual response (response of the opposite eye).
It includes the reflexive blinking that occurs specifically in response to the rapid approach of an object. [1] The menace response comprises blinking of the eyelids, in order to protect the eyes from potential damage, but may also include turning of the head, neck, or even the trunk away from the optical stimulus that triggers the response. [2]
Blepharospasm is often associated with dry eyes, but the causal mechanism is still not clear. [16] [8] Research in New York and Italy suggests that increased blinking (which may be triggered by dry eyes) leads to blepharospasm. [24] [25] A case control study in China found that blepharospasm aggravated dry eyes. [26]
Locked-in syndrome (LIS), also known as pseudocoma, is a condition in which a patient is aware but cannot move or communicate verbally due to complete paralysis of nearly all voluntary muscles in their body except for vertical eye movements and blinking. [3]
Staring – Staring is more than just eye contact; it usually involves eyes wider than normal. A lack of blinking may indicate more interest, but it may also indicate a stronger feeling than a person may intend. Prolonged eye contact can be aggressive, affectionate, or deceptive. Following with the eyes – Eyes follow movement naturally. If a ...
After Corcoran received the deadly dose of drugs through an IV hooked up to the wall, he “appeared awake with his eyes blinking, but otherwise still and silent,” according to the lone reporter ...
Myerson's sign or glabellar tap sign is a clinical physical examination finding in which a patient is unable to resist blinking when tapped repetitively on the glabella, the area above the nose and between the eyebrows. It is often referred to as the glabellar reflex.
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