What sort of spectacle lenses should I get?

The majority of spectacle lenses are now made of plastic materials, which makes them dramatically lighter than glass lenses. When combined with a quality scratch resistant coating, these lenses are very durable: unfortunately, there is no such thing as a ‘guaranteed scratch-proof’ lens. Polycarbonate or Trivex materials are often utilized for industrial or pediatric applications because they are unbreakable (and that’s guaranteed). Higher prescriptions may benefit from aspheric and/or high index lenses with anti-reflection coatings: while more expensive, they can dramatically reduce lens weight and thickness, reduce distortions, and improve both your vision and the lens appearance.