La rifrazione del occhio; compreso un trattato completo su opthalmometry; una clinica libro di testo per studenti e professionisti del settore . 1895, Ida S., agedthirty anni in buona salute, ma ha risentito in misura notevole withheadaches poiché una scolaretta. Ella ha avuto numerosi vetri,ma nessuno è stato confortevole o alleviato il mal di testa. Ophthalmometer.-astigmatismo con la regola, ID., asse75°+ o 165°- occhio destro ; 3 D., asse 120°+ o 30°- occhio sinistro. Le schede di prova e lenti di prova. - R. V. = 2o : 5.o w. + .25D. + .50D. cil., 75°. L. V. = 22o°o : io W- + 1-25 D. cil., 120°- 1,25 D. cil., 30°. Letture Jaeger n. 1

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The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . 1895, Ida S., agedthirty years, in good health, but has suffered considerably withheadaches since a schoolgirl. She has had numerous glasses, but none have been comfortable or relieved the headaches. Ophthalmometer.—Astigmatism with the rule, ID., axis75°+ or 165°- right eye ; 3 D., axis 120°+ or 30°- left eye. Test cards and trial lenses. — R. V. = 2o_: 5.o w. + .25D. + .50D. cyl., 75°. L. V. = 22o°o : io W- + 1-25 D. cyl., 120°- 1.25 D. cyl., 30°. Reads Jaeger No. 1 from 5 to 20 inches. Ophthalmoscope. — H. ID. right eye; H. 1.50 D. at 30°and M. 1.50 D. at 120° left eye. Second test: this resulted in the patient accepting exactlythe same glasses as at the first test, and they were ordered: — + .25 D. + .50 D. cyl., 75° right eye;-1.25 I). + 2.50 D. cyl., 120° left eye. [LLUSTRATIVE CASES lie; In this ease, as the mixed astigmatism was not of largeamount and was equally divided between hypermetropia andmyopia, 1 converted the cross-cylinder into a sphero-cylinder, . L. E. a minus sphere with a plus cylinder, so that the cylinder wouldcorrespond in character (plus) with the cylinder in the oppositeeye. These glasses have been worn with great comfort. CASE LXXVII. Mixed astigmatism with the rule left eye;Simple myopic astigmatism with the rule right eye; Amblyopia;Asthenopia; Belief with glasses. — January 9, 1894, George 13., aged thirty-five years, in good general health, but has beengreatly troubled with his eyes for many years. He is com-pelled to hold reading matter too close to his eyes, and afterusing the eyes for close work, vision becomes painful and oftenheadaches follow. Ophthalmometer.—Astigmatism with the rule in each eye, 3.50 1)., axis 105°+ or 15°- right eye; 5 D., axis 85°+ or175°— Left eye. 194 THE REFRACTION OF THE EYE Test cards and trial lenses. —R. V.= H : |£W.-3D.cyl., lO°. L. V. = {f-0 :

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• bookauthordavisa
• bookcentury1900
• bookdecade1900
• librosubjecteye