Should I get Anti-Reflective Coating on my glasses?
Anti-reflective coating is one of the most misunderstood beneficial coatings available for ophthalmic lenses. Anti-reflective coatings are available on TV’s, laptops, Cell-phones and it is easy to immediately understand the benefit on these devices. It would be nearly impossible to look at a cellphone outside on a sunny day if the screen did not have anti-reflective coating. However, the benefits of having anti-reflective coatings on ophthalmic lenses may not be readable understandable.
Not All anti-reflective coatings are created equal.
Just like there are different brands of shoes, tv’s, cars, etc. There are numerous different manufacturers of anti-reflective coatings. Not all manufactures product equal products. Anti-reflective coatings have evolved overtime and the newer coatings are significantly more technologically advanced compared to coatings 10 or 20 years ago.
Our doctors recommend Crizal Anti-Reflective Coatings due to their continued excellence and performance.
Crizal Anti-reflective lenses increase visual acuity, decrease the effects of a poor aberration value, have a superior scratch coating which comes with a warranty, and contain UV coatings to protect against harmful ultraviolet light. We always recommend this coating to individuals of all ages and all prescriptions. You will see better with a good anti-reflective coating.
So why is anti-reflective coating important to have on eyeglasses?
One of the most prescribed materials for ophthalmic lenses is polycarbonate. Polycarbonate reflects almost 10% of all light it also has an abbe value (aberration) of 30. The Abbe Value indicates how much light is separated into the colors of a prism. In comparison glass has an abbe value of 59 which produces much less dispersion of light in this manner. Polycarbonate has one of the worst abbe values and reflectance properties but it is recommended frequently by opticians’ due to its superior impact resistance.
An un-coated polycarbonate lens has increased glare due to the inherit reflective properties of the lens and it is also possible to see the aberrations in the lens in the forms of different colors (red, green, etc).
Anti-reflective coating greatly reduces these problems by destructive interference. Anti-reflective coating produces a wavelength that when glare hits the surface of the lens it cancels out the incoming reflected light.
— The wavelength of the anti-reflective coating negates the incoming reflected light wavelength. The destructive interference produced by antiglare allows for more light to pass through the lens.
Allowing more light to enter the lens drastically increases visual acuity and decreases visual fatigue.
- 20% sharper contrastso a driver can see objects clearly
- Up to 5 seconds fasterrecovery time (bright headlights for example) and 30% wider fields of vision for safety.