Filter Number: 20
Lens Colour: Grey
Visible Light Transmission: 63%
Protection: Ultraviolet

Each filter colour has a Visible Light Transmission (VLT) figure, which indicates the percentage of light passing through the filter. A low value will block more light from entering the eye; a high value allows more light into the eye. You should avoid a VLT% that is too dark for your needs for safety reasons.

The grey filter has the potential to relieve indoor glare, particularly under fluorescent lighting.

Framed styles come in a number of different ranges. Fit overs are intended to be used over prescription spectacles. Non fit-over and wraparound frames are intended to be used without prescription spectacles.

Please note: Frame images are shown in greyscale, please refer to the colour swatch above as a guide to the tint of these filters.