The rays pass from behind the head and are perpendicular to the radiographic plate.
Another variation of the waters places the orbitomeatal line at a 37° angle to the image receptor.
It is named after the American radiologist Charles Alexander Waters.
Waters' view can be used to best visualise a number of structures in the skull.
[3] Another variation of the waters places the orbitomeatal line at a 37° angle to the image receptor,[4] or 30°.