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Prism Lenses
Double vision is caused by light entering the eyes at the wrong angle, which sends two different images to the brain. Eyeglasses with prism lenses eliminate double vision.
The principle of prism lenses
A prism is a shape with flat, transparent surfaces that bends light. Some people suffer from double vision caused by their eyes not focusing on the same location. Adding a prism shape to eyeglass lenses bends light travelling into the eye in such a way that it aligns what each eye is seeing, eliminating the double image interpreted by the brain.
A prism is a shape with flat, transparent surfaces that bends light. Some people suffer from double vision caused by their eyes not focusing on the same location. Adding a prism shape to eyeglass lenses bends light travelling into the eye in such a way that it aligns what each eye is seeing, eliminating the double image interpreted by the brain.
How Do Transitions® Lenses Work?
Depending on your needs, one lens of your prism glasses may be slightly thicker than the other. You might like to choose a thicker frame style to cover the edges of the lens more completely. If this doesn’t bother you, you aren’t restricted in the style of frame you choose at all, so take your pick.