[Huntress]

What is it for?

[JPG]

From the NY Post:

– Secretary of State Hillary Rodham Clinton’s new eyeglasses aren’t just a new look — they have a special lens that’s used to treat double vision, eye doctors told The Post. Clinton, recently treated for a blood clot near her brain after a fall, wore the Fresnel lens to aid her left eye during the Benghazi hearing. “This kind of prism helps for people who are experiencing double vision,” said Dr. Vike Vicente, a pediatric ophthalmologist in Bethesda, Md. “Anybody who’s had a head injury, as the Secretary of State did, it could affect the way your eyes move,” he said.

[Bob the builder]

I believe she suffers from a form of double vision in her left eye. An adhesive prism attached to the lens to help balance her left eye. A temporary fix I believe. Or it could be a prop to gain sympathy.

[Caipirabob]

I had to check it out a week or so ago. A fresnel lens compensates for visual distortions due to stroke.