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"Yes. Opticians still sometimes use glass for lenses. However, glass  is not used very often because they aren’t as safe. If these glass lenses breaks, they can shatters into many pieces and can injure the eye. Glass lenses are much heavier than plastic lenses, so they can make your eyeglasses less comfortable to wear."
<https://www.eyemechanix.com/2021/02/17/how-to-prevent-your-lenses-from-scratching/>