{HEAD ~ The adhered strip} fills up the otherwise void spaces between the face of {TAIL ~ the patient} and the peripheral edge of the mask, thereby preventing leakage of pressurized oxygen toward the eyes of a patient during oxygen delivery 
{ HEAD ~ The adhered strip } fills up the otherwise void spaces between the face of { TAIL ~ the patient } and the peripheral edge of the mask , thereby preventing leakage of pressurized oxygen toward the eyes of a patient during oxygen delivery
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH