What is an Anti-Reflection Coating?

Anti-reflective or anti-reflex (AR) coatings are a type of optical coating applied to the surface of lenses to reduce reflections.

Optometrists dispense anti-reflex lenses because the decreased reflection makes them look cosmetically better, and they produce less glare, which is particularly noticeable when driving at night or working in front of a computer monitor.

The decreased glare means that wearers often find their eyes are less tired, particularly at the end of the day. Allowing more light to pass through the lens also increases contrast and therefore increases visual acuity.

What are Transitions?

Transition or photochromic lenses are lenses that darken on exposure to UV radiation. Once the UV is removed (for example by walking indoors), the lenses will gradually return to their clear state.

Typically, photochromic lenses darken substantially in response to UV light in less than one minute, and then continue to darken very slightly over the next fifteen minutes. The lenses fade back to clear along a similar pattern.