What are toric contact lenses?
A toric lens is a contact lens that's shaped in a particular way. Standard contact lenses have a spherical surface: think of a slice of the side of a beach ball.
A torus, in contrast, is a geometric shape that looks like a donut. A toric lens is shaped like a slice of the side of this donut.
The shape of toric contact lenses creates different refractive, or focusing, powers on the vertical and horizontal orientations. The refractive strength increases or decreases gradually as you move around the lens.