Trial case definitions

trial case

A case containing pairs of + and - lenses, both spherical and cylindrical, used in sight testing.
Found on http://eyediologyopticians.co.uk/pages/Eye-terms-explained.html

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trial case

In refraction, a box containing lenses for testing. ... (05 Mar 2000) ...
Found on http://www.encyclo.co.uk/local/20973

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trial case

Type: Term Definitions: 1. in refraction, a box containing lenses for testing.
Found on http://www.medilexicon.com/medicaldictionary.php?t=14842

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