...
The near vision segment type: to indicate in the catalogue catalog what is the segment type of the near vision (curve, flat, round, executive, pantoscopic)
Visible segment edge: Yes/No
The value of the lower radius of the near vision segment
The value of the upper radius of the near vision segment
The height of the near vision segment
The geometric center of the near vision segment
The value of the upper radius of the intermediate vision segment
The height of the intermediate vision segment
...