G I

G II

G III

G IV

p-value

Duration of akinesia for eyelid and eye

2.28 ± 0.49

2.43 ± 0.50

4.62 ± 0.62

3.73 ± 0.64

0.001*

Duration of anesthesia

2.92 ± 0.66

2.63 ± 0.60

5.03 ± 0.89

3.93 ± 0.69

0.001*