Table 2: A comparison of means of tear and serum electrolytes.

 

Mean

t -value

P - value

Df (n-1)

Na+ Tear

 

131.06 ± 6.39

 

 

-4.265

 

0.250

 

98

Na+  Serum

135.56 ± 3.84

K+ Tear

 

21.40 ± 1.57

 

 

71.065

 

< 0.001*

 

98

K+  Serum

4.14 ± 0.69

Cl- Tear

 

122.86 ± 7.12

 

 

19.224

 

0.001*

 

98

Cl- Serum

101.58 ± 3.25