The following was written by Bill Evans and published in the Coolum and North Shore News, Ask the Professionals page on Friday, 25th July 2014.
Q: What are multi-coated lenses?
A: A multi-coat – also known as an antireflective coating – is a series of layers on the inside and outside surfaces of your glasses designed to minimize lens reflections, improve the clarity of your vision and protect the lenses. The surfaces of a glass or plastic lens can show up reflections that may hinder your vision. By using very thin multi-layered coatings, these reflections can be practically eliminated. Multi-coated lenses can be of great benefit while using a computer or for improving the contrast for night driving. They also let other people see your eyes more clearly, so are great for people in sales or lecturing, as sometimes lens reflections may mask your eyes.
Modern multi-coats also provide scratch resistance to the lenses and may repel dust and water. Some multi-coats may be more difficult to keep clean than regular lenses, however newer technology coatings are better at preventing smudges and fingerprint marks. Ask us if multi-coated lenses would suit your next pair of glasses.