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Materials and Types of Frames Page
Systems of Measurement and Frame
Frame Rules Page
15 other sections not shown
addition adjustment alteration amount anisometropic axis back surface base width bridge height brow-bar colour concave contour convex cornea curl sides curve datCD datum line datum rule dioptre dispensing distance portion effect example eyerim face fitter fitting fixation flat frame measurements front fused bifocals geometrical centres glasses gold heat hockey-end sides horizontal inserted intermediate joint length to bend lens shape lens size lenses lenticular material metal frames method millimetres neutralising normal nose Nylon Supra obtained optical centres optician pad bridge patient plano plastic frame pliers position possible prescription house prism prismatic projection protractor pupil pupillary distance reading portion reading segment refractive index round scale screw side angle slide rule solid bifocals spectacle bridge spectacle frame spectacle plane stock frames strap temple width thickness trifocals upper vary vertical vision visual axes wearer xylonite