Hardening

Anti-scratch treatment is a coating applied to the surfaces of ophthalmic lenses to make them more durable and resistant to scratches and surface damage. This treatment is especially beneficial for those who wear glasses on a daily basis, as it helps to protect the lenses from damage that can occur due to minor accidents, friction or incorrect handling of the glasses.

In short, the anti-scratch treatment is a hardening varnish, an option to improve the durability and visual quality of eyeglass lenses, making them more resistant to scratches and extending the useful life of the glasses. It's a useful addition, especially for those who value the quality and aesthetics of their glasses.