Ophthalmic Mechanics and Dispensing |
Contents
OPHTHALMIC GLASS | 10 |
TRIFOCALS DOUBLE SEGMENT BIFOCALS CATARACT BIFOCALS | 14 |
LIGHT | 22 |
Copyright | |
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Common terms and phrases
aberration adjustment alignment American Optical Company angle aphakic astigmatism back surface back vertex Balgrip base curve base-apex line Bausch & Lomb bevel blank caliper cataract center thickness chart concave convex crown glass curvature cylinder axis cylinder form cylinder power D₁ decentration distance portion doctor edge thickness edger effective power endpiece example eyewear eyewires flint glass focal frames and mountings front surface fused bifocal grinding index of refraction kryptok lens stop lenses lensometer light major lens manufacturers marked measurement millimeters minus cylinder minus lens neutralizing nose oblique ophthalmic glass optical center Optical Company optical cross Orthogon pads Panoptik patient plane pliers position Power Formula power wheel prescribed prescription prism diopters prism power protractor rays reading level refractive index reticle rimless rotation round segment single vision spectacles sphere power spherical Spherical Aberration surface power target temple Tillyer Trifocal Ultex Univis vertical Vertometer wear