Visual optics and sight testing / by Lionel Laurance.

  • Laurance, Lionel, 1856?-1936.
Date:
1912
Catalogue details

Licence: In copyright

Credit: Visual optics and sight testing / by Lionel Laurance. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    SYMBOLS AND ABBREVIATIONS Evi. Emmetropia, or Emnjc- F or P. F. tropic. Affl; * • • • Ametropia, or Ametropic. H. Hypermetropia, or Hyper- Fy and F., metropic. /] and/.. 777 TTvnpvmptvnniH In t.fiiTfc J. 1 y UCi 111<_ L1 \J\JlOi lit L» 11 L . Em. Hypermetropia manifest. 0. Ht. Hyperroetropia total. M. Myopia, or Myopic. I. As. Astigmatism, or Astig- + or Ox. matic • - or Cc. ItL ■ JXO - • • • « Myopic astigmatism. Nor. or If. H. As. Hyperopic astigmatism. Ver. or V. Pv. OT PvCS. i*I\ttam a av I-'pdcmt?nni r* i luoijyupia, ui xioojjjujjio. Alcr. .. Aniso. .. • Anionniofirinia m* AtIISH- D. metropic. M.A. .. A nth AQtliPTinnin nr AstiliP.TiOTiic a Crys. .. Ovttqt'ei 1 li ti p 1 pn Q °d. T j.. Tension or liardness of the A pvpVifil I 8. or sj)h. r. L. Perception of light. rti /'ill T. T) Liglit difference. Pr. T M TiifirVif miTiinnliTn . 1 11 V I 1 1. Ill.lllllll Ulil • Ax. V 1SU3, VIOlUll- 77 A • V ISUdl d/\jlllby . K. • JLklgli L. .. - ,. j NL . Nasal. Per is. .. Tl. . Temporal. Pcx. .. Con. or C. . Convergence. Pec. .. Ac. or A. . Accommodation. Dcx. P. P. or P. . . Punetumproximum. Near Dec. .. point. ? P. Rt or R. . . Punctum remotum, far 0 point. sEl,. or AE. 0. D. or R. E. Oculus dexter, right eye; j. 0. S. or L. E. Oculus sinister, left eye. S. 0. U. or B. E. Oculi una, both eyes. P.I). .. CO . Infinity, a distance not HI. less than 20 ft. or 6 m. Proj. . ■ vi .. The index of refraction. .. Principal focal distance or focus. . Anterior and posterior focal distances or foci. .. Conjugate focal distances or foci. .. Object. .. Image. .. Plus, convex. .. Minus, concave. .. Horizontal. .. Vertical. .. Meridian. .. Diopter. .. Metre angle .. Degree. .. Degree of deviation. .. Prism diopter. .. Spherical. .. Cylindrical. .. Prism. .. Axis. .. Combined with. .. Equal to. .. Greater than. .. Less than. .. Periscopic. .. Periscopic convex. .. Periscopic concave. .. Double convex. .. Double concave. .. Recipe, prescription. .. Cum, with. .. iEtatis. aged. .. Jaeger. .. Snellen. .. Pupillary distance. .. Height of bridge. .. Projection.