JOIUSS™ Blue Light Block GuideClear X BLUE BLOCK
Daytime wear for all devices when working or gaming in artificial lightYellow Lenses
Helps people with depression, anxiety, mood swings and seasonal affective disorder (SAD)Red Lenses
Worn a few hours before bedtime to reduce blue light from lights, screens and helps aid a restful sleep routine.
For further information see our lens guide - Click Here
JOIUSS™What is an Add?
An ADD is used to make the reading prescription easier for the optician to write.NEAR SPHERE - FAR SPHERE = ADD
See the example below:
RE/OD +1.00 / -0.50 x 90
LE/OS +1.00 / -0.50 x 90
RE/OD +3.00 / -0.50 x 90
LE/OS +3.00 / -0.50 x 90The ADD would be..
NEAR SPHERE - FAR SPHERE = ADD
3.00 - 1.00 = +2.00
*We ask you below to upload a picture for us to ensure the ADD is correct
The horizontal distance between pupils measured in millimeters (mm)What is it used for?
It is used to help set the centre of the lenses in the correct place.Why is that important?
So that your maximum quality and visual comfort is achieved.
Read our blog showing you how to measure it correctly - Click Here
Originally designed mens sunglasses.
Frame Name / SKU: RUSS-BLACK-SUN
Material: Acetate (Hand Made)
Features: Flexible sprung side arms, black and clear two-tone colours, inlaid gold foil JOIUSS™ brand label to both side arms. 100% UV protection.
Size: 52□21 - 150
Frame Width: 149 mm
Lens Width: 52 mm
Lens Height: 41 mm
Bridge Width: 21 mm
Side Length: 150 mm