Table 7.

Corneal staining

	Mean ± standard deviation
	Baseline, n = 49	Visit 4, n = 47
Central cornea
Scorea	0.5 ± 0.6	0.3 ± 0.4
Improvement		−0.2 ± 0.5*
Inferior cornea
Scorea	1.3 ± 0.7	1.1 ± 0.8
Improvement		−0.3 ± 0.5*
Nasal cornea
Scorea	1.0 ± 0.7	0.8 ± 0.7
Improvement		−0.2 ± 0.6*
Superior cornea
Scorea	0.5 ± 0.5	0.4 ± 0.5
Improvement		−0.2 ± 0.4*
Temporal cornea
Scorea	0.8 ± 0.6	0.5 ± 0.5
Improvement		−0.2 ± 0.6*
Total score
Scoreb	4.1 ± 2.3	3.1 ± 2.1
Improvement		−1.0 ± 1.3**

Notes: Values were averaged from both eyes of each patient.

^aOn a scale where 0 = none, 1 = mild, 2 = moderate, and 3 = severe;

^bsum of the five corneal sectors, yielding a scale from 0 to 15.

^*P < 0.05;

^**P < 0.001.