Blue-cut + Photochromatic (Changable)

Photochromatic lenses are lenses that stay transparent indoors, but darken when exposed to ultraviolet light from the sun. Essentially, they provide the benefits of glasses and sunglasses in a single frame. Blue cut lens is a special coating that reflects harmful blue light and restricts it from passing through the lens of your eyeglasses. Blue light is emitted from computer and mobile screens and long term exposure to this type of light increases the chances of retinal damage.