. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Ophthalmology. 2014 Mar 27;121(7):1389–1397. doi: 10.1016/j.ophtha.2014.01.033

Table 1.

Diagnostic Criteria for Dry Eye after Refractive Surgery

	Dry Eye
Control (Normal)	Intermediate	Dry Eye
✓No symptoms	✓No Symptoms	✓Symptoms
✓No punctal plugs	✓No punctal plugs	✓Punctal plugs
✓No SPK	✓No SPK	✓SPK
✓RB score = 0	✓0 ≤ RB score ≤ 1	✓RB score >1 ✓Or combination of 2 of the following:
✓TBUT ≥10	✓5 ≤ TBUT <10	TBUT <5
✓Schirmer tear test ≥10	✓5 ≤ Schirmer <10	Schirmer tear test <5
✓McMonnies questionnaire:	✓McMonnies questionnaire:	McMonnies questionnaire: score >20
✓Male patients score ≤10	✓Male patients 10 < score ≤20
✓Female patients score ≤15	✓Female patients 15 < score ≤20

RB = Rose Bengal; SPK = superficial punctate keratitis; TBUT = tear break-up time.

Punctal plugs are a device inserted into the tear duct to prevent drainage of liquid from the eye. SPK is the death of small groups of cells on the surface of the cornea (usually pinpoint).