Diseases and refraction of the eye / by N.C. Macnamara and Gustavus Hartridge.
- Nottidge Charles Macnamara
- Date:
- 1891
Licence: Public Domain Mark
Credit: Diseases and refraction of the eye / by N.C. Macnamara and Gustavus Hartridge. Source: Wellcome Collection.
593/646 page 575
![R. +1-5 D. L.— + •5 D. - + 2 D. We try this at the test type. 1'5 D. cy. axis vert. We make a slight deduction from the sphere in each case for the noinatropme and order for constant use :— .R. + 1 D. sph. L. +1*5 D. cy. axis vert. «i%fll%i?reSi^0?!a\J^n ^ ' ffifc- 50> has alwa^ enjoyed good sight, he still sees distant objects well, but finds some difficulty in reading, especially during the evenings. J &' R.V. |, no Hm, L.V. f, no Hm. th W>,?7fhim ^ + 2 f01' and wifch t]iese he s^8 perfectly ; ?5#2£aK siyr. presbyopia'requiring a pair of foMers Case 17. Hypermetropic, and Presbyopia.—-Mr. K ffit 60 sees S^clSaMe1 °bjeCtS' hC ^ + 4 * fading; fife? f.V. 3% Hm. 3 D. = f L.V. ^ Hm. 3 D. = |. He therefore requires + 3 D. for distance, and t'o find the dass ho will require for reading, it is necessary to add on to tins dStance lass the we n?xt Z +°tT tr^bim^h + * D* but these mak* ^s eyesaX we next tiy + 6 5 D., and with these he sees comfortably. -Lnis patient then requires two pairs of spectacles— + 3 D. for distance. + 6*5 D. for reading, &c. L.V.^-2D. = ^.](https://iiif.wellcomecollection.org/image/b20405698_0597.jp2/full/800%2C/0/default.jpg)
