The Correlation between Matrix Metalloproteinase-9 Point-of-Care Immunoassay, Tear Film Osmolarity, and Ocular Surface Parameters

Table 2

Qualitative evaluation of MMP-9 with ocular surface parameters.

	MMP-9 positive	MMP-9 negative	value
Eyes, n	19	5
Osmolarity (mOsmol/L)	315.95 ± 22.205	304.0 ± 11.269	0.302
Schirmer’s test I (mm)	5.65 ± 7.650	4.6 ± 6.025	0.942
NIBUT (sec)	10.07 ± 6.195	7.26 ± 4.0721	0.393
Corneal staining score	0.89 ± 0.994	1.2 ± 1.643	0.939

MMP-9 = matrix metalloproteinase-9; NIBUT = noninvasive tear break up time. Indicates statistical significance ()