Definitive sign of stage 3 plane 1 of anaesthesia:
|A||Fixation of eyeball|
|C||Blurring of vision|
Fixation of eyeball
Although the most definitive sign of onset of surgical anaesthesia Le., stage III is onset of regular respiration but fixation of eyeball is seen at the end of stage III, plane 1 (plane 1 begins at start of regular respiration and ends with cessation of eye movements Le., fixation of eyeball).