Ophthalmic lenses, dioptric formulae for combined cylindrical lenses : the prism-dioptry, and other optical papers (1907)
Prentice, Charles F. (Charles Frederick), b. 1854 · Philadelphia : Keystone · leaf 169
Fig. 3. Fig. 4. By more widely separating the lens centers (4-), it will be observed thatthe disconnected portion of the line ZZ, as seen through the lenses, willappear displaced to a lesser degree, and, if the upper concave lens 2.5 D. CEMENTED BI-FOCAL LENSES SOLVED BY THE PRISM-DIOPTRY. 159 is…
Lenses · Prisms (Ophthalmology)
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