Idea of Opera Glasses Icon
These are binoculars, take for instance bathroom toilet paper. Just add magnifying which helps you see further. Roll up two identical circle tubes and attack them on the outside with magnifying ends so you can see further. They add a middle that holds these two circles together and on the back of it is a place to put your eyes so you can get nice and comfortable viewing.
This is a Opera Glasses icon. It is available in PNG and vector. Downloading is free for PNGs up to 100x100px.