• Why HID Headlights Bother Older Drivers. Mainster MA, Timberlake GT. Br J Ophthalmol 2003 Jan;87(1):113-7

"Glare...is worse for older drivers because of their increased intraocular light scattering, glare sensitivity, and photostress recovery time."

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• Alternative Treatments for Sleep Maintenance Insomnia in the Elderly: White Light VS. Green Light.  Philip Gehrman¹, Jennifer Martin¹, and Sonia Ancoli-Israel². Sleep 1999; Vol 22 Supplement : S263

" Some subjects complained of the intensity of the white light. The  green light (SUNNEX's Lo-LITE) has less glare, so the greater effectiveness of this treatment may be due to the subjects having greater tolerance and therefore being more compliant."

Full Abstract