3M Press-On (Fresnel) Prisms

3M Press-On Prisms
3M Press-On Prisms
Item# 3M Prism
$19.95
Diopter: 

3M Press-on Prisms, also known as Fresnel Prisms, provide a system for creating prismatic corrections inexpnesively and quickly. Press-on prism material is flexable static vinyl which can easily be cut to shape with scissors to determine the acceptance of a proposed corrective prescription. Adheres well to existing lenses, yet it can be repositioned and easily.