351 / | HD | OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING |
41 | DF | SPECTACLES AND EYEGLASSES {29} |
124 | .~ Bridges {8} | |
125 | DF | .~.~> Crossbar type |
126 | DF | .~.~> Flexible {1} |
128 | DF | .~.~> Adjustable |
129 | DF | .~.~> Reinforced |
130 | DF | .~.~> With auxiliary support |
131 | DF | .~.~> With nose grip or guard integral with bridge |
132 | DF | .~.~> With nose grip, nose guard, pad, or cushion |
133 | DF | .~.~> With connectors or straps {2} |