| 351 / | HD | OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING |
| 200 | DF | EYE EXAMINING OR TESTING INSTRUMENT {7} |
| 205 | DF | .~ Objective type {10} |
| 206 | ![]() | .~.~ Including eye photography {2} |
| 207 | DF | .~.~.~> Having spurious reflection blocking |
| 208 | DF | .~.~.~> Having means to detect proper distance or alignment (i.e., eye to instrument) |