n. an abrupt and involuntary movement of the eyelids. Usually, the eyelids close in response to physical irritation, a foreign body, bright light, or any other peripheral stimuli. Also called the blink reflex. See corneal reflex.
n. an abrupt and involuntary movement of the eyelids. Usually, the eyelids close in response to physical irritation, a foreign body, bright light, or any other peripheral stimuli. Also called the blink reflex. See corneal reflex.