Assertion: prism | /r/HasProperty | ground into lens
Facets:
Source sentences:
text: Since peripheral vision is most often affected, prisms are ground into the lenses to show an image outside the range of sight, simply by placing the prisms within the viewer
text: The prism can be ground into the lens, or it can be a sticker stuck to the lens.
text: Since peripheral vision is most often affected, prisms are ground into the lenses to show an image outside the range of sight, simply by placing the prisms within the viewer