Absorbance

Group

Silicon Oil 1300 cs (n = 13)

Silicon Oil 5500 cs (n = 9)

Wave length:

770 nm

Mean (SD)

Median

Range

0.059

0.148 (0.093)

0.131

0.049 - 0.357

0.111

0.103 (0.062)

0.096

0.024 - 0.176

Comparison of Wave length sample to unused silicon oil

p = 0.005

p = 0.699