Eyeglasses correct vision, make people look more intelligent, and—when worn upside down—enable a dormant wad of gray matter in the brain to control the Hubble Telescope. Unleash your satellite-wielding capacities with today's Groupon: for $50, you get $150 worth of frames, lenses, eye exams, contact fittings, and more at Pinnacle Vision Care in Nampa.

With an experienced optometrist on staff and a selection of more than 500 frames and a variety of lens types, Pinnacle Vision Care offers a fix for almost every bout of blurry, foggy, or x-ray vision. Eye exams ($105, or $155 with contact-lens fitting), each performed by a licensed doctor, serve to screen the eye for diseases and engineer lenses for sharp lines and clear images. Frame droppers and cactus battlers can feel secure in the knowledge that every eyewear purchase at Pinnacle Vision Care includes a two-year warranty against breakage. A large variety of basic frames are available for around $47–$100, and can be filled in with basic lenses (starting at $60), upgraded single-vision lenses ($100–$185), or progressive lenses ($200–$600).