The purpose of this paper is to put on record a case of a rather uncommon but striking anomaly occasionally encountered in the refraction of the eye.
Since the subject of astigmatism has been brought into the domain of scientific and practical study, the principal questions referring to it, which have come under discussion, have related to its seat, frequency, variety, cause, effects on the visual acuity and comfort of seeing, the health of the eye and on the functions and disturbances of distant organs. Statistics bearing on the relative frequency of the different forms of astigmatism compared with one another and the refraction in general, are at hand, while the very highest forms have apparently not received the same attention. The trial cases appear to place the limit at 6 or 7 D. The reason for this is obvious; astigmatism can only be adequately