Adlens Emergensee Variable Focus Eyeglasses - You Set the Magnification Grey

These adjustable prescription glasses are an ideal spare pair for when you've lost or broken your regular eyeglasses and contact lenses. The low cost solution for instant vision correction makes them a convenient addition to a first aid kit, workbag or glove box too! Simply turn each dial to glide the overlapping lesnes to create different prescriptions in seconds! Easily adjustable for a wide range of spherical powers from -6.0 - +3.0D. Features: Continuously adjustable for far, near and intermediate use One size fits all Correct 90% of sperical errors Easy to adjust - at the turn of a dial Light weight and durable No tools required Note: Not intended as a long-term replacement of primary pair of glasses and for RX with high astigmatism.