They also tinted and offer 100% UVA-UVB lens protection.
The lenses have three lens strengths in one, making them perfect for reading, using a computer, and interacting with others near you. Protective case included.25 The bottom third has the highest strength (and the power you choose) for reading, the middle third has a slightly reduced magnification for computer use, and the top third has about half the strength of the bottom, for clarity when interacting with someone nearby (sitting across a desk, for example).