Originally Posted by
AngeliaNR
From what I read, you put them on the thumb of your non-sewing hand to direct the light at what you are sewing.
One LQS suggested strapping it to your eyeglasses!
Also, that her husband scooped one quickly to wear like that when he was doing plumbing and needed light under the kitchen sink.
I was gullible and bought one ... and never got the knack of it on my glasses, around my finger or any other way tha I could figure it may work.