Table 2 Changes in optic nerve sheath diameter measurements between time points

T0

4.56 ± 0.41

T1

−0.07

−0.09

− 0.05

< 0.001

T2

−0.14

−0.16

− 0.11

< 0.001

T3

−0.17

−0.19

− 0.15

< 0.001

T1

5.25 ± 0.58

T0

0.07

0.05

0.09

< 0.001

T2

−0.07

−0.09

− 0.05

< 0.001

T3

−0.10

−0.12

− 0.09

< 0.001

T2

5.92 ± 0.63

T0

0.14

0.11

0.16

< 0.001

T1

0.07

0.05

0.09

< 0.001

T3

−0.04

−0.05

− 0.02

< 0.001

T3

6.28 ± 0.55

T0

0.17

0.15

0.19

< 0.001

T1

0.10

0.09

0.12

< 0.001

T2

0.04

0.02

0.05

< 0.001