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Table 1 Values of the Schirmer tear test (mean and standard deviation in mm/min) in 40 clinically normal horses measured twice daily on two consecutive days

From: Results of the Schirmer tear test performed with open and closed eyes in clinically normal horses

Test day

Eye status and no. of measurements

Eye

P value

Left

Right

 

Day 1

Open T0 (n = 40)

21.5 ± 3.1

21.5 ± 3.3

1.0

Close T30 (n = 40)

22.3 ± 3.0

21.9 ± 3.1

0.02

P value

<0.001

0.027

 

Day 2

Close T0 (n = 40)

23.7 ± 2.8

23.7 ± 2.8

1.0

Open T30 (n = 40)

23.0 ± 3.1

22.8 ± 2.9

0.3

P value

0.004

<0.001

 
  1. Number of measurements per eye per day = 80