DESK is an occupational design intended for intermediate and near use, such as computer or reading. It expands these specific visual fields featuring a very low unwanted astigmatism level, swim effect and lateral distortion.
It is, as well, a soft design with an almost immediate adaption.
Besides, the specific power distribution helps user to work in its natural posture, reducing also back and head movements.
You can let the software choose the right degression by choosing your depth of field or you can manually select your desired degression. A table of equivalences is provided below to ease your choice.
Degression recommended
| Add | -0.75 | -1.25 | -1.75 | -2.25 | |
|---|---|---|---|---|---|
| 0.75 | infinite | ||||
| 1.00 | 4m | ||||
| 1.25 | 2m | ||||
| 1.5 | 1.33m | 4m | |||
| 1.75 | 2m | ||||
| 2.00 | 1.33m | 4m | |||
| 2.25 | 2m | ||||
| 2.50 | 1.33m | 4m | |||
| 2.75 | 2m | ||||
| 3.00 | 1.33m | ||||
| 3.25 | 1m | ||||
| 3.50 | 0.80m |
Power & Cylinder Maps
Design Features
- Office Design
- Intermediate and near use
- Very low unwanted astigmatism
Technical Specifications
| Market segment | Office/Computer lens |
| Calculation Technology | Nominal Power |
| Type | Soft |
| Allowed Material | All |
| Additions | 0.75 – 3.50 dpt |
| Variable Degression | 0.50 – 2.75 dpt |
| Depth of Field | Variable (within 33 cm – 4mt range) |
| Minimum fitting Height | 15 mm |
| Inset | Variable 0-4 mm (only based on power) |
| Personalization | No |
| Precalibration | Yes |