Table 1.

Time points of IOP and ONSD measurements

Time points of measurements		IOP	ONSD
T0	Patient awake in supine position before induction of anaesthesia	X	-
T1	20 min after induction of general anaesthesia in supine position	X	X
T2	After insufflation of the abdomen with CO2 in supine position	X	X
T3	After 30 min in 45° Trendelenburg position with the abdomen still insufflated with CO2	X	X
T4	Control of Santorini’s plexus in 45° Trendelenburg position with CO2 still insufflated	X	X
T5	Anaesthetised before awakening in supine position	X	X