I had to say 'none of the above' because none of the options were really appropriate.
Light therapy does more than 'take the sting out of SAD' for me. It enables me to function. I can cope with my thoughts and feelings and maintain relationships. I can process thoughts and ideas and explain myself. Things that without my lightbox I would not manage.
I wouldn't say I am '100%' though. Because SAD is always with me and I carry that concern. I am always aware of my behaviour, mood and level of fatigue so that I can moderate my day to accomodate those feelings. So I am never 100% free of SAD. I still have problems with all the things I mentioned before (thought processing etc) BUT my lightbox enables me to function better.
I didn't agree with any of the given options. I would have been happy with a 'light therapy enable me to live' type of option.
You seem to be obsessed with the concept that light therapy can only have a 100% effect, a mild effect or no effect. Well for me the impact of light therapy is massive - perhaps if the options were more balanced.
Why are you asking so many questions? Is is personal interest? Government research? You are a question-aholic?
Thanks for you post bright one, I'm just a asking the questions because I think I'm onto a theory which stupid scientists can't come up with cause they need proof of things but to be honest I think SAD is more mystirious and will never be able to answer all questions. The reason why I use 100% alot is because I really hope there will be a cure for this and as a newbie to SAD even though I've had it all my life, its really taking time to sink into me the problem I have, I've not been able to enjoy my life full due to this disorder and I have alot of drive to have it cured not just for me but for everyone.