blue light blocking lenses: professional quality blue light blocking lenses with explosionproof, clarity, true color reproduction and durability to deliver a better visual experience. Comfortable fit: quality frames with precise magnification lenses and an oversized appearance for clear vision and daily wear appeal. Sturdy metal hinge fits most faces for durability and stability. Nonslip nose pads, ergonomic temples, and a wider field of view provide allday comfort without turning your neck. Magnification options: +0.00 to +3.50 magnified lenses help you see clearly objects that are 1214 inches away (screens, books, laptops, etc.) when they would otherwise be out of focus or cause further eye strain. Blue light blocker computer readers: square metal frame antiblue light reading glasses with quality antiblue light lenses that block harmful blue light from mobile phones, computers, TVs and other screens, reducing eye fatigue and relieving dry eyes. Use scenarios: Office or desk work: extended screen time on computer, laptop, or monitor with reduced eye strain and improved clarity. Closeup reading: books, magazines, or ereaders at 1214 inches for clearer focus without fatigue. Mobile and media use: scrolling on smartphones or tablets and watching videos on TVs or monitors with reduced blue light exposure and less eye dryness.