Text ( visual ) : unmediated New series of metric test-letters and words for determining the amount and range of accommodation / by Charles A. Oliver. -- [S.l. : s.n.] , [1886]. -- 3 p. ; 24 cm. -- "Reprinted from Transactions of American Ophthalmological Society, 1886". -- (BB01864902) ; https://ci.nii.ac.jp/ncid/BB01864902 Author Heading(s): Oliver, Charles A. (Charles Augustus), b. 1853