There are advantages and disadvantages to both.
Metal frames are generally lighter and can be adjusted to fit quiet easily.
Plastic frames are generally available in a bigger variety of shapes, sizes and colours but cannot be adjusted to the same extent as metal frames.
They tend to fit more comfortably on the nose as the weight is spread more widely across the nose rather than the full weight bearing down on two small nose pads as with metal frames. They also can fit thicker lenses better than a metal frame and are more suited to the wrap around shape.
Some people are allergic to materials such as nickel in metal frames or the silicone in the nose pads.
At Sapphire Eyewear all our prescription and non-prescription glasses come with anti blue light lenses as standard. You can check out our collection of blue light glasses here.
Our blue light glasses come with a 14 day return period if you are not 100% happy with your glasses.