These glasses are available in two different types of grid:
The same size holes throughout the entire surface suitable for everybody. This grid has been successfully used since the invention of the scanning glasses!
Pinhole glasses with quadratic holes. Longtime experience shows that this pattern is preferred by persons with under 3,0 diopters and is used by non-spectacle wearers for prevention.
Dimensions of glasses:
- Width 137 mm
- Length of earpiece 108 mm
- Nose bridge 19 mm
- vision chart
- multilingual audio CD