rubbing

Does anynone here know of technique consisting of compressing one's eyeball to open Schlemms's canal and thus opening it? My doctor recommended me to do this 3 times a day and it results. After compressing the eyeball, my IOP goes down significantly. Yesterday I went to an Optical firm (an optometrist) and, when i entered ther, my tension was at 35. After compressing the eyeball it went down to 22 and after compressing it again, it went down to 18.