Abstract
In the routine physical examination of United States Air Corps personnel for flying duty the use of the multiple Maddox rod and the Risley rotary is an established procedure in the quantitative determination of heterophoria, in both the horizontal and the vertical meridians. Further, the rotary is used in estimating the abduction of the visual axes, recorded on form 64 (Adjutant General's Office) as prism divergence. While the rotary is not essential in arriving at a definite conclusion as to heterophoria, it is a convenience and a time saver. As a part of the flight surgeon's equipment there is a phorometer trial frame with an adjustable bracket and a tripod stand, a rather complex and impressive piece of equipment. Usually there is also attached a Stevens phorometer, which is rarely used. The trial frame consists of a triple cell (one rotary) for trial lenses, a Risley rotary
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
