释义 |
DictionarySeeframetrial frame
tri·al framea type of spectacle frame with variable adjustments, for holding trial lenses during refraction.tri·al frame (trī'ăl frām) A type of spectacle frame with variable adjustments, for holding trial lenses during refraction. trial frameAn eyeglass frame for holding trial lenses while a person is being fitted for glasses.See also: frametrial frame Spectacle frame with variable adjustments for interpupillary distance, side length, etc. in which each lens rim is fitted with a number of cells into which trial lenses can be placed when testing vision (Fig. T18). See phoropter; Simultantest. " > Fig. T18 Trial frame |