STEROSCOPIC OPTICAL ILLUSION EXAMINATION METER

摘要

A device useful in diagnosing optic nerve and ocular diseases in people who are capable of experiencing the Pulfrich stereo-illusion phenomenon, which comprises a suitably sized sphere (5) and a suitably sized cone (6), one of which is movable and the other of which is stationary, said sphere and said cone being suitably illuminated and positioned with the bottom of the sphere below the cone so that they can be seen by a person to be tested, means either for traversing the sphere slightly behind the cone or moving the cone in an arc slightly in front of the sphere at a fixed rate of movement, polarizing filters (12) capable of being adjusted with respect to the amount of light which will pass through disposed in adjustable means (15) suitable for the person to be tested to look through at a distance from said sphere and cone enabling said person to readily see said sphere and cone.