83
Participants
Start Date
May 31, 2012
Primary Completion Date
February 28, 2017
Study Completion Date
February 28, 2017
light therapy 30 min morning and evening, three months
"Light from a commercially available table-mounted lightbox (Brazil, Lumie, Cambridge UK) \[dimensions 50.2 x 32 x 15.4 cm\] equipped with 3x36W Fluorescent bulbs (Osram 954), reflectors and a diffuser screen providing 10,000 lux at 30 cm eye level distance.~therapy consists of 30 minutes light exposure in the morning and evening during 3 months."
light therapy 30 min morning and evening, three months
"200 lux light from a commercially available table-mounted lightbox (Brazil, Lumie, Cambridge UK) \[dimensions 50.2 x 32 x 15.4 cm\] To lower the intensity to 200 lux the bulbs are enwrapped with one layer of L299s neutral density filter (LEE Filters, Andover, UK).~Therapy consists of 30 minutes light exposure in the morning and evening during 3 months."
VU University Medical Center, Amsterdam
International Parkinson Foundation ('IPF'), Hoofddorp, The Netherlands
UNKNOWN
Parkinsonvereniging, Bunnik, the Netherlands
UNKNOWN
Netherlands Brain Foundation
OTHER
Netherlands Institute for Neurosciences, Amsterdam, The Netherlands
UNKNOWN
GGZ inGeest
OTHER
Amsterdam UMC, location VUmc
OTHER