vertex distance, so the distance from the surface of the eye to the back of the lens. we d also look at the wrap of the frame as well so we can see how much of a wrap the frame had. so your trip here might only need to be to get your eyes tested, unless you want to feel the product first, or long for an optician s opinion. i can choose the colour of the arms let s go for silver, they look nice. now i can order them. and the future could also see more choice. 3d printing now is a technology where you can print in more than 15 materials. so in the future we will print goods, frames, in transparency material, in bio material, in metal material. so we are at the beginning of this industrial revolution. the aim here is what s being called mass customisation
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