. Author manuscript; available in PMC: 2013 Feb 26.

Published in final edited form as: Am J Ophthalmol. 2008 Nov 7;147(2):198–e1. doi: 10.1016/j.ajo.2008.08.032

Table 2.

Clinical Features of Dysfunctional Tear Syndrome and Control Patients

Group	N	% Female	Mean Age ±SD	Symptom Severity Score^¥	Schirmer 1 score (mm)	Corneal Staining score	Conj LG Staining
No DTS	14	50	45 ± 17.3	13 ± 6.1	26.8± 9.2	0.14±0.4	0± 0.0
DTS	30	73	55.2±16.4	37.8±11.2 P<0.001	14.2±9.1 P<0.001	4.8±4.4 P<0.0008	2.2±2.3 P<0.01
DTS w/MGD	9	100	62.2±14.7	31.6±10.8 P<0.001	15.4±8.3 P<0.05	2.9±3.4	1.3±1.8
DTS w/o MGD	21	62	52.2±16.5	40.5±10.4 P<0.001	13.7±9.6 P<0.001	5.6±4.6 P < 0.001	2.6±2.4 P<0.01

Statistical comparisons are between DTS groups and the controls.

DTS = dysfunctional tear syndrome; MGD = meibomian gland disease Conj = conjunctiva; LG = lissamine green