The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . orneal astigmatism ; Asthenopia ;Relief with glasses. — November 29, 1895, M. L. H., agedtwenty-five years, in good health, is a designer of wall papers,which occupation requires very acute vision. The patient com-plains that for the last two months her eyes have ached andpained her, and also that her head ached if she persisted inusing her eyes for an hour or two at her work. Ophthalmometer.—Astigmatism with the rule, ID., axis90°-j- or 18U°— right eye ; no corneal
The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . orneal astigmatism ; Asthenopia ;Relief with glasses. — November 29, 1895, M. L. H., agedtwenty-five years, in good health, is a designer of wall papers,which occupation requires very acute vision. The patient com-plains that for the last two months her eyes have ached andpained her, and also that her head ached if she persisted inusing her eyes for an hour or two at her work. Ophthalmometer.—Astigmatism with the rule, ID., axis90°-j- or 18U°— right eye ; no corneal astigmatism left eye. Fig. 62. — Showing myopic astigma-tism against the rule — emme-tropia in the vertical meridianand myopia in the horizontalmeridian. ILLUSTRATIVE CASES 129 Test irds and trial lenses.—The lines on the clock-dialwere unsatisfactory. R. V. =j : ; W. - 75 1). cyl., 180°.L. V. = j#: g{ W. -5o i). cyl., 90°. Reads Jaeger No. 1 from 6 to 12 inches. Ophthalmoscope. — Myopia 1 D. at 90° and emmetropic at180° right eye; myopia .7.~. at 180° and emmetropia at 90°left eye. 90° 90°. A 0° ^ LE J NS . R. E. Fig. 63. L. E. The retinoscope confirmed the ophthalmoscopic examinationand the subjective test. A second test was made, and the patient accepting the same- as at first, they were ordered. Although one glass isworn at 90° and the other at 180°, they have given her entirerelief from her asthenopia symptoms. I have seen the patientfrequently since, and she continues to wear the glasses con-tinuously and with comfort. Case LII. Simple myopic astigmatism in one eye, and simplemyopia in the other; Asthenopia; Relief with glasses. — May 6, 130 THE REFRACTION OF THE EYE 1896, E. D., aged thirty-two, in good health, but has noticedsince boyhood that he could not see quite so well as his com-panions when looking at distant objects. For the last sixmonths he has experienced pains in the eyes and some frontalheadaches after using his eyes for close w
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