It happen to this lady I know through birdsites. Her name is Maria, she lives in San Francisco (she is a primary school teacher) and she not only has birds of her own but also fosters for Mickaboo (this was her own cockatiel, though). She was using one of those lamps that are made to clamp on to cages. The thing is that for UV emissions to be effective in vit D3 production, the lamp needs to be fairly close to the animal's body and that is fine with reptiles because they have a third, transparent eyelid that protects the cornea but birds eyes are not like that and get hurt when the light shines too close to them.
If you have no ceiling fixtures, I suggest you do what I did with the birds I keep in my dining room (there is a ceiling fixture there but the chandelier hangs right above the dining room table in the middle of the room and would not have given good light to the birds whose cages are next to a window). I bought two clamp lights in Home Depot (
http://www.homedepot.com/p/HDX-75-Watt- ... /205139241), hanged them from hooks that I screwed on the ceiling (
http://www.homedepot.com/p/OOK-50-lb-Wh ... /100115444), used an extension to plug them into the wall, and I pointed them down using full spectrum bulbs in them (
http://www.lumiram.com/ecolume-compact- ... 5000k.html).