1
significantly (P < 0.05)
Pooled SEM for main effects (n = 6) 2
Pooled SEM for interaction effect (n = 2) 3
The numerical scale for grading corneal lesions was 0 = normal cornea;
A
0.5 = not normal but less than 1; 1 = diffuse corneal edema generally
over greater than three quarters of the corneal surface; 2 = 1 + a focal
superficial corneal ulcer measuring less than one quarter of the corneal
surface; 3 = 1 + a corneal ulcer of half or more of the corneal surface
and extending into the anterior chamber; 4 = 3 + deeper extension into the
stromal layers and 5 = corneal perforation