4 filters for anti-suppression activities.
Filters are in primary red-green colours to place on:
– accommodative charts;
– television screen;
– PC screen;
Transparent material is useful to use in backlight condition: e.g. behind the window with more peripheral awareness task.
Filters are indicated to use with red-green filters (E/RGG).
Set comes with:
– 1 couple of 15 x 20 cm filters (1 in green colour and 1 in red
– 1 couple of 20 x 30 cm filters (1in green colour and 1 in red
0.20 mm filter thickness.