Accommodation spasm may be triggered by the factors below: Accommodation indexes for each eye separate are called “absolute”.And for the two eyes together – “relative” as they are evaluated under convergence of optic axes. With the same convergence angle of the optic axes, the accommodation efforts vary in patients with different visual acuity. children with uncorrected hypermetropia (far-sightedness) of moderate to high degree can develop accommodated converging strabismus.The corneal reflex, also known as the blink reflex, is an involuntary blinking of the eyelids elicited by stimulation of the cornea (such as by touching or by a foreign body), though could result from any peripheral stimulus.
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When awake, the lids spread the tear secretions over the corneal surface, on a typical basis of 2 to 10 seconds (though this may vary individually).
However, blinking is not only dependent on dryness and/or irritation.
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Feeling of a foreign body in the eye (so called blepharoconjunctivitis), headache sometimes accompanied by vomiting.