Figure 1. Operational magnitudes of the indicators of the Nursing Result Dry Eye Severity^{( 8 )} .

	Decrease in tear production	Incomplete eyelid closing	Conjunctiva redness	Excessive tearing	Excessive mucous secretion	Decreased blinking mechanism
1	< or = 2 mm	Completely exposed cornea	Numerous vessels all over the ocular surface	Continuous tears	Purulent	< or = 2 times/min
2	< or = 5 mm	½ of the exposed cornea	Numerous vessels in the conjunctiva and at the beginning of the cornea	Tears running down the face	Mucopurulent	3 times/min
3	< or = 10 mm	1/3 lower of the exposed cornea	Expanded vessels in the conjunctiva and perilimbal	Occasional Coryza	Mucous plaques	4 times/min
4	or = 15 mm	Exposed conjunctive	Superficial hyperemia in the conjunctiva	Slightly wet eyes	Mucoid filaments	5 times/min
5	> 15 mm	Absent	Absent	Absent	Absent	>5 times/min