Spectrum Environmental Lighting Filters by Spectracom Technologies

– available as a reuseable sleeve (the 500 series) to fit over standard 4′ x 8′ fluorescent tubes or as sheets (the 600 series) which is easily installed above the diffuser panels
– claims to alter the light spectrum to reduce glare and improve comfort level for eyes

Available through:
Harts Upholstered Products Co. Ltd. @ (905) 475-0505
or
Spectracom, contact Harris Kirshenbaum (905) 823-3566