An optical method to trace the reflex movement of eyeball

概要

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The author have devised an apparatus for tracing the reflex movement of eyeball. The principle of the method is as follows:—A small reflecting mirror is attached to a round plate which turns up and down on its axis; from one side of this plate a very thin piece of wire is extended, which is placed on the concave surface of the cornea of an eye. Then the slight movement of an eye gives movement to the wire, and then the wire transmit it to the reflecting mirror on the round plate. This mirror reflects the image of luminous source on the way which appears it on the other side, and the movement of which is pictured on a revolving film in a straight line. The following is the superiority which we allow our method:—1) In observing eyeballs any surgical operation are not needed and the resistance to hinder the eyemovement is very slight.2) This method can be used not only for animal demonstration but also for man in clinic.3) Horizontal, perpendicular or oblique eye-movement can be easily pictured by this method.4) This method can be carried on more simply and plainly than another method.5) Eye-movement can be made enlargedly or contractedly6) There is no trouble of making mistakes in picturing between the spring of the long lever and the eye-movement in the case of the method of the kymography.7) We can picture rapid or slow element of the nystagmus more plainly by this method.
耳鼻咽喉科臨床学会の論文