Though some eyeglasses imbue their owners with special powers, others simply improve eyesight, enhance outfits, and magnify the eyes' light energy to destroy errant armies of fire ants living on the sun. Peer into a new pair of eye enhancers with today’s Groupon: for $20, you get $150 toward a pair of eyeglasses, as well as a second pair at no cost, at Site for Sore Eyes. This Groupon is valid at 37 locations throughout the Bay Area.

Site for Sore Eyes has dedicated more than three decades to enhancing eyesight, with each of its locations neighboring an eye-analyzing optometrist to provide specialized care. Squinty-eye browsers can sniff their way across thousands of affordable, nose-adorning frames, each crafted from first-rate designers, including Calvin Klein ($279 for Model 5620), Guess ($239 for Model 1529), and Randy Jackson ($259 for Model 3004). Site for Sore Eyes’ lens forgers outfit each optic enhancer within an hour, and a precise fitting takes just five minutes, the same amount of time it takes to relieve faces of any Halloween masks or clingy stray cats. A second pair of eyeglasses comes at no added cost; all that is needed are third and fourth eyes.

A Worry-Free Warranty ($25, not included in the value of this Groupon) replaces broken frames for free and replaces lost glasses at half price, with any unused warranty credit applied to in-store credit. Though not included with today’s Groupon, guests can also undertake a comprehensive eye exam from Sterling VisionCare at every Site for Sore Eyes vision emporium.