1.PERFECT READERS: For those with 20/20 distance vision who need reading glasses, progressive readers are an ideal choice for multitasking. These readers have a magnified lower portion of the lens for closeup reading, a middle part that reduces magnification for computer use, and an upper portion with zero magnification that allows for tasks such as driving without the need to remove the glasses. They provide a quick and easy adaptation without causing dizziness. 2.BEST CHOICE AFTER CATARACT SURGERY: Progressive readers without magnification upper portion of the lens are a great choice for wearers with corrected distance vision and presbyopia. These readers have no visible lines and are more aesthetically pleasing than bifocals. 3.MAXIMUM EYE PROTECTION: blue blocker lenses that are made of CR39 are antireflective, scratchresistant, and embedded with blue light protection material. These lenses optimal visual comfort, clarity, and cosmetic appearance. They provide UV protection and help reduce digital eye strain caused by harmful blue light.