Toric Contact Lenses | 合法醫療器材資訊網

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You may have heard that toric lenses are contact lenses for astigmatism, but what are they and why do they help? We walk through how to put on contacts[1] and how they work as well as what to consider if you think you need them.

A toric lens is a contact lens thats 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.

Toric contact lenses correct for astigmatism issues tha...