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  • Title: Some components affecting the precision of corneal thickness measurement performed by optical pachometry.
    Author: Edmund C, la Cour M.
    Journal: Acta Ophthalmol (Copenh); 1986 Oct; 64(5):499-503. PubMed ID: 3811860.
    Abstract:
    With the Haag-Streit pachometer attached to a Haag-Streit 900 slit-lamp, 29 normal individuals were examined by repeated measurements on two separate days by the same observer. A statistical variance component model admitted three components of variance to be separated and estimated as SD: The biological day to day variation (0.006 mm), the variation attributed to the slit-lamp adjustment (0.005 mm), and the variation derived from the adjustment of the pachometer (0.013 mm). Knowing these components an optimum practical procedure of examination can be established.
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