| 6.1 |
Single Vision Lens |
| |
| Case 1 |
If scratch is found in Zone <1> - not acceptable |
| Case 2 |
If scratch is found near Zone <2> but still on Zone <1> or on Zone <2>
i) Scratch’s length is less than 10% of the total diameter of the lens - acceptable
ii) The scratch can only been seen when moving the lens under florescent light – acceptable |
| Case 3 |
If the scratch is in Zone <3> - acceptable |
 |
|
| 6.2 |
Bifocal and Progressive Lens |
| |
| Case 1 |
If scratch is found in Zone <1> - not acceptable |
| Case 2 |
If scratch is found near Zone <2> but still on Zone <1> or on Zone <2>
i) Scratch’s length is less tan 10% of the total diameter of the lens - acceptable
ii) The scratch can only be seen when moving the lens under fluorescent
light - acceptable |
| Case 3 |
If scratch is found on Zone <2> or <3> but at near vision zone - not acceptable |
| Note： |
Zone <1> Diameter 45mm |
| |
Zone <2> the rest of the area after <1> and <3> |
| |
Zone <3> 5mm in from the edge |
|
|
