What is the meaning of the word “toric?”
The word toric describes a specific shape. It comes from the word torus, which is the shape of a doughnut. If you cut a little slice off the side of a donut, that slice is toric—it’s a piece of a torus and has two different curvatures perpendicular to each other. Toric contact lenses use this principle to correct astigmatism—there is a flatter curve, and a steeper curve. With toric contact lenses, you won’t be able to see these two curves with your naked eye. The contact lenses will look the same as spherical lenses.