Can a UV lamp also damage the ponies the same way real Sunlight can? The room my ponies are in is also the room where I spend most of my time. I cross stitch a lot so the lights in my room are chosen to mimic natural daylight, to help with eye strain for stitching. My collection is in a dark little closet with a glass door and its quite shady in there, but should I be worried about the bulbs in my room causing damage?
As Galactica says, most daylight bulbs which you would use for sewing have a filter on them - other wise they would in fact be dangerous to use or be overly exposed to. Its only if you use an unfiltered lamp - such as one you would find on a sun bed - you would have the same problem as exposure to sun light.
The UV rays which cause the damage are the same rays which tan or burn skin - so if your lamp tans or burns your skin then yes it would cause the same issues as sunlight but if it doesnt then you will be fine.
BlackCurtains, super talented lady that she is, has done some experimenting with various light sources on pink fading hair and her conclusion was pretty much that natural light or UV was only the real issue.