The head should normally be tilted forward so that the gas does not contact the front of the eye, but the surface of the back of the eye. The length of time that the head should be kept in this position depends on the quantity of gas given.
The head should normally be tilted forward so that the gas does not contact the front of the eye, but the surface of the back of the eye. The length of time that the head should be kept in this position depends on the quantity of gas given.