References on Sleep and Aging

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

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

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

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