The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . ut her eyes have continued painful and the lids now has a well-marked blepharitis marginalis, and is fre-quently troubled with headaches. I ordered a mild astringentwash and yellow oxide of mercury ointment (2 grains to 3n),and after two weeks made the first test for glasses. Ophthalmometer. — Astigmatism against the rule, 75 I).,axis 185° + or 4-3° - right eye; astigmatism with the rule,75 D., axis 45°+ or 135°- left eye. Test cards and trial lenses.— R-V- =
The refraction of the eye; including a complete treatise on opthalmometry; a clinical text-book for students and practitioners . ut her eyes have continued painful and the lids now has a well-marked blepharitis marginalis, and is fre-quently troubled with headaches. I ordered a mild astringentwash and yellow oxide of mercury ointment (2 grains to 3n),and after two weeks made the first test for glasses. Ophthalmometer. — Astigmatism against the rule, 75 I).,axis 185° + or 4-3° - right eye; astigmatism with the rule,75 D., axis 45°+ or 135°- left eye. Test cards and trial lenses.— R-V- = ?2-: f£W.+ .75D. + .25D. cyl., v-=l5-= !£W. + 1 D.+.25D. cyl., 45°.Reads Jaeger No. 1 at 7{ inches. Ophthalmoscope. — Hypermetropia of D. in each was impossible to estimate the small amount of astigmatism. 94 THE REFRACTION OF THE EYE Second test, three days later, resulted, as follows : Oph-thalmometer gave the same reading as on the previous exami-nation. Test cards and trial lenses. — r. y. = |f - : ff W. + D. + .25 D. cyl., 135°.L. V. = ff - : ff W. + D. + .25 D. cyl., 45°.. R. E. L. E. Fig. 48. The ophthalmoscope showed the same amount of H. as atthe first examination. Ordered : — + +.25D. cyl., 135°; + + .25D. cyl., 45°. These glasses have been worn constantly for three and one-half years, and with entire relief of her blepharitis marginalisand freedom from asthenopia. Within a month a+. been added to the distance glasses for reading purposes,on account of presbyopia, she being now 42| years of age. ti\ i; CA£ 95 Here again tin ophthalmometer was of great assistance,for it pointed out the small amounl of astigmatism that waspresent and at the unusual axes of 45 ami 135°, — whichastigmatism, by the way. had been overlooked at her previoustests a mydriatic. The instrument read astigmatismagainst the rule in the right eye and with the rule in the lefteye. and an equal amount in each,
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