Table 1.

Correlation Analysis Among DED Evaluation Metrics, Including Corneal Irregularity Score, Corneal Staining Score, PRT Length, GCD and GCA from In Vivo MBFM, and hGCD From Ex Vivo Histology

	Corneal Irregularity	Corneal Staining Score	PRT Test	GCD (Live Image)	GCA (Live Image)	hGCD (PAS Stain)
Corneal irregularity
Spearman correlation	1
Sig. (2-tailed)
N
Corneal staining score
Spearman correlation	0.655**	1
Sig. (2-tailed)	<0.001
N	56
PRT test
Spearman correlation	−0.537**	−0.602**	1
Sig. (2-tailed)	<0.001	<0.001
N	56	56
GCD (live image)
Spearman correlation	−0.753**	−0.733**	0.532**	1
Sig. (2-tailed)	<0.001	<0.001	<0.001
N	56	56	56
GCA (live image)
Spearman correlation	−0.535**	−0.582**	0.296*	0.805**	1
Sig. (2-tailed)	<0.001	<0.001	0.027	<0.001
N	56	56	56	56
hGCD (PAS stain)
Spearman correlation	−0.635**	−0.688**	0.381**	0.818**	0.789**
Sig. (2-tailed)	<0.001	<0.001	0.004	<0.001	<0.001
N	56	56	56	56	56	1

Spearman correlation analysis was performed.

^*Correlation is significant at the 0.05 level (2-tailed).

^**Correlation is significant at the 0.01 level (2-tailed).