Foster Grant Sheila Reading Glasses e.Reader Blue Light Glasses, Women, Matte Tortoise/Transparent, 50 mm

What is the height of the lenses on the sheila readers?

Do these glasses aid reading hard copy print as well as they work for e--media?

Can you read your other computer screens as well as you are able to read your kindle &/or hard copy without having to make any adjustments?

Measurements? On arm usually 3 #s with space or dash between.