| ReturnTo Theme-Group-Choice | Onelevelup |
| 2H006 | EYEGLASSES | |
| G02C1/00 -13/00 | ||
| G02C5/00;5/12;5/22;7/00;7/04-7/06;7/10;11/00;13/00 | AA | AA00 STRUCTURE OF NON-OPTICAL PARTS |
AA01 | AA02 | AA03 | AA04 | AA05 | |||||
| . Metal frames | . . Frames that contain titanium | . Plastic frames | . Surface treatments | . Ornamental frames | ||||||||
| AB | AB00 NOSE PADS |
AB01 | AB02 | AB03 | AB04 | AB05 | AB06 | |||||
| . Nose pads | . . Characteristics of materials | . Mounting units of pad | . . Box-shaped mounting units on pads | . Adjustable pads | . Elastic members | |||||||
| AC | AC00 HINGES |
AC01 | AC02 | AC03 | AC04 | AC05 | ||||||
| . Screw hinges | . . Elastic members | . . Adjustable screw hinges | . Use of balls or springs | . Locking members | ||||||||
| BA | BA00 OPTICAL MEMBERS (CHARACTERISTIC MATERIALS) |
BA01 | BA02 | BA03 | BA04 | BA05 | BA06 | |||||
| . Resins | . Glass | . Surface treatments | . . Hardening treatments | . . Markings | . Coloring | |||||||
| BB | BB00 CONTACT LENSES AND COMPOSITION THEREOF |
BB01 | BB02 | BB03 | BB04 | BB05 | BB06 | BB07 | BB08 | BB09 | BB10 | |
| . Soft types | . Hard types | . Wet types | . Non-wet types | . Oxygen-transmission types | . Characteristics of the materials | . . Silicone resins | . . Vinyl pyrolidone | . . Fluororesins | . Surface treatments | |||
| BC | BC00 CONTACT LENSES CHARACTERIZED BY FEATURES OTHER THAN THE COMPOSITION THEREOF |
BC01 | BC02 | BC03 | BC04 | BC05 | BC06 | BC07 | ||||
| . Concave or convex lenses for near- or far- sightedness | . Cylindrical lenses for astigmatism | . Superimposed focal spots | . Compound materials | . . Surface treatments | . Coloring | . Manufacturing of contact lenses | ||||||
| BD | BD00 LENSES WITH SUPERIMPOSED FOCAL SPOTS |
BD01 | BD02 | BD03 | BD04 | |||||||
| . Discontinuous superimposed focal spots | . . Insertion types | . Consecutive superimposed focal spots | . . Insertion types | |||||||||
| BE | BE00 FILTERS |
BE01 | BE02 | BE03 | BE04 | BE05 | ||||||
| . Concentration or color variations | . . Photochromic materials | . . Liquid crystals | . Halftones | . Materials or surface treatments | ||||||||
| CA | CA00 NON-OPTICAL ACCESSORIES |
CA01 | CA02 | CA03 | CA04 | |||||||
| . Clips | . Chains for glasses | . Bands for glasses | . Grindstones | |||||||||
| DA | DA00 ASSEMBLY, REPAIR, OR CLEANING |
DA01 | DA02 | DA03 | DA04 | DA05 | DA06 | DA07 | DA08 | DA09 | ||
| . Assembly | . . Ball-grinding processes | . . Frame selection | . . Insertion of lenses into frames | . . Measurement | . Cleaning | . . Cleaning of glasses | . . Cleaning of contact lenses | . . Use of cleaning fluids |