As you stated, spring is on its way, at least in some parts of the world. Here in southeastern Ontario, it's snowing today, and cold. Ugghh.

Is there any way you could add more light to your office space? If not, how about a framed mirror, with a plant next to it, to emulate a window? A spider plant, pothos or english ivy would be extremely low maintenance -- or even a fake plant -- nowadays they're very realistic. Just a thought.

Try to get in some bright light early in the morning, if you can, for about 30 minutes. Sit next to a bright lamp or a bright window while you're having brekkie, and read or catch up on business reports or whatever. If you take transit to work, maybe leave the house a bit earlier so you can walk for a bit to a bus stop that's further away. Even on cloudy days, the total amount of light available outdoors is still greater than indoors with artificial lighting! ..

About sunglasses -- I'm extremely photosensitive as well, and have to wear sunglasses -- especially when there's lots of snow, which is reflective and creates a lot of "glare" even on cloudy days. Photosensitivity has a lot of causes, from aging to side effect of certain medications. It's doubtful to be directly related to SAD.

A carefully planned lowcarb diet should also help symptoms. By carefully planned, I'm suggesting that you try to eat smaller amounts more frequently, and always include some protein at every meal AND snack. This will prevent swings and dips in blood sugar, which seem to have an influence on the level of important neurohormones such as serotonin and dopamine (which play a role in mood, sleep/wake, cravings, etc...). Oh, another thought too, if you're in an air-conditioned office where the air is very dry, make sure you stay well-hydrated through the day. If there's no water cooler, be sure to take your own bottled water or other carb-free fluid to drink.

(I've been following a Canadian study on SAD that's currently underway. Although nothing new and exciting on the horizon, I HAVE uncovered that they are indeed looking at the relationship of diet, in particular carbohydrates, and SAD).

take care, and happy Spring

Doreen