Anti-Reflective Coatings

All lenses reflect light. Reflected light creates ghost images (e.g. multiple images of headlights at night) and reduce the amount of light that gets to your eye. In a process very similar to sound cancellation technology, Anti-Reflective (AR) lenses cancel reflections by inverting the reflected light back upon itself.

The result is reflection of less than 1% of the light striking the lens (uncoated lenses reflect between 8-16%). This means greater visual comfort for the wearer (especially at night or during computer use), and a better cosmetic appearance (note the model in the picture, one lens is coated, the other is not). The Eyesite uses the services of Pentax Laboratories for AR coatings. Pentax has been a primary developer of AR technology, and you will see their coatings on many camera and telescope lenses.

AR coating typically costs $50 and is warranted for one year against defects. AR should only be applied to new lenses- to avoid peeling or non-adherence. The Eyesite also sells high-index lenses with AR already applied at a fraction of the normal cost!