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An Outline of Refracting Unit Technique with some notes on the British Refracting Unit
ARCHIVAL ITEMS
book; instructions
Raphael's Ltd; Ebbage, Eric L.
Europe: United Kingdom
paper
overall: 222 x 141 mm

Booklet outlining the construction and use of the British Refracting Unit (BRU) including preliminary procedure, adjustment to the patient, determination of muscle balance, retinoscopy, subjective test, binocular comparison test, muscle balance with correction, dynamic retinoscopy, near point test, latent hyperopia test, detection of suspension and proof of stereopsis, measurement of ductions. Black and white illustrations of the unit, its accessories and the author Mr Ebbage conducting a test on a patient at the LRH. 24 pages.


2004.619

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



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