Coloured Filters for Low Vision Lens

Coloured Filters

Vision for people with some eye diseases can be improved by using colour filters. The filters recommended to aid certain conditions are outlined in the table below.

Filters absorb the short wave, high-energy ultraviolet and blue elements of the light so enhancing contrast and reducing photosensitivity. Filter colours differ depending on the absorption range, which is how much ultra violet light is filtered out. The higher the number the more UV light is absorbed by the filter and the less light is transmitted through to the eye.

Colour Selection

Each filter colour gives an outline of the uses and eye conditions that they are particularly recommended for but selection can also be made on cosmetic colour choice together with the amount of light transmission needed for the tasks to be undertaken whilst wearing them.

Polarising filters

The filters are also available with an additional polarising filter. A polarising filter allows light to enter the lens of the eye in a specific direction whilst absorbing other light. Its effect is to remove reflections from a shiny surface.

Coloured Filter Recommendations

Code	Colour	Absorption	Uses
16603801, C422G, C402G	Grey Grey Polarising	380nm	Outdoor use, Reflection reduction
16604501, 1662450, 1662450P C422Y, C402Y C302L, C422L, C402L, C412L	Yellow, Lemon Yellow, Polarising Yellow Polarising Lemon Lemon	450nm	Contrast enhancement, Macular degeneration, Optic atrophy, Albinism, Pseudophacia
16605111, 1662511, 1662511P, C422C, C402C C302H, C422H, C402H, C412H	Brown, Yellow Orange, Polarising Copper Polarising Hazelnut Hazelnut	511nm	Macular Degeneration, Cataract, Glaucoma, Aphacy, Optic Atrophy, Pseudophacia, Retinopathia Pigmentosa, PUVA treatment
16605271, 1662527, 1662527P C422A, C402A	Orange, Amber, Polarising Amber Polarising	527nm	Macular Degeneration, Cataract, Glaucoma, Aphacy, Optic Atrophy, Pseudophacia, Retinopathia Pigmentosa, PUVA treatment
1662550, 1662550P C302O, C422O, C402O, C412O	Orange, Polarising Orange Orange	550nm	Diabetic retinopathy, Photophobia, Cataract, Glaucoma
C302B, C422B, C402B, C412B	Plum Plum		General purpose absorptive filter, Diabetic Retinopathy, Retinitis Pigmentosa, Glaucoma, Cataract, Photophobia