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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 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,
Polarising Grey
380nm Outdoor use, Reflection reduction
16604501,
1662450,
1662450P
Yellow,
Lemon Yellow,
Polarising

Lemon Yellow
450nm Contrast enhancement, Macular degeneration, Optic atrophy, Albinism, Pseudophacia
16605111,
1662511,
1662511P
Brown,
Yellow Orange,
Polarising
Yellow Orange
511nm Macular Degeneration, Cataract, Glaucoma, Aphacy, Optic Atrophy, Pseudophacia, Retinopathia Pigmentosa, PUVA treatment
16605271,
1662527,
1662527P
Orange,
Amber,
Polarising
Amber
527nm Macular Degeneration, Cataract, Glaucoma, Aphacy, Optic Atrophy, Pseudophacia, Retinopathia Pigmentosa, PUVA treatment
1662550,
1662550P
Orange,
Polarising
Orange
550nm Diabetic retinopathy, Photophobia, Cataract, Glaucoma



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