Optotypes, consisting of test-letters and pictographs for measuring the acuteness of vision, by John Green ... and A. E. Ewing ... with thirty-five engraved plates.

St. Louis, C. V. Mosby company, 1923.

24 p. plates.

MUDD,ZETA Teh81 +923ga: Text wanting.

The test-letters and pictographs are printed on cards 17 1/2 x 23 cm-18 1/2 x 35 1/2 cm.

English

June 01, 2002

Eye > Examination.