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Routine Refraction with the British Refracting Unit
ARCHIVAL ITEMS
book; instructions
S. Pulzer & Son Ltd; Stearman, S.R.
Europe: United Kingdom
1930s
paper, cardboard
overall: 207 x 134 mm

Booklet outlining the construction and use of the British Refracting Unit (BRU) including preliminary questioning, retinoscopy, subjective testing, measuring phorias by Maddox test or Duplicating Prism method, measurement of ductions, accommodation and convergence tests (use of F-L chart) and test for suppression. Black and white illustrations of the unit, its accessories and a practitioner (possibly Eric Ebbage) conducting a test on a patient. 19 pages. Stiff cover.


2004.621

Gift of A. H. Rivron & Son Ltd, 2004



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