| 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} |