com - The Sarasota - +1.50 Disclaimer: All references to "bifocals" herein refer to readers having unmagnified lenses containing a "bifocal style" single powered reading glass insert located on the lower portion of the lenses.Square Bifocal Reading Sunglasses in Tortoise with Smoke Lenses by Readers. - Square Bifocal Reading Sunglasses in Tortoise with Smoke Lenses by Readers.