All Products

All visual stress support products: coloured page overlays, reading rulers, visual stress software, tinted magnetic marker boards, tinted exercise books and reference books on visual stress.
A peer-reviewed study of Crossbow reading rulers and overlays can be found in the March 2019 edition of the journal "Vision Research."  For a summary of the article, click here.

Crossbow Clarity and quality.
Our coloured overlays and reading rulers are made of virgin PET manufactured specially for Crossbow, and they have a special scratch-resistant coating.