Those lenses are called a myodisc lens. Not the best choice. The power is ground into the smaller area of a carrier lens to help reduce edge thickness. She must be way over - 12.00 diopters. They aren't used very often and are rather old fashioned. The choice of frame she has there was not a good one either , which tends to make them look even worse. Her frame is much too wide. Unnecessary width has to be avoided with powers like that , but an unexperienced person let her get those. There are ways to make them look much better than that.