Ophthalmic Lenses for Vision Correction: Review of Application, Usage and Trends

Abstract

This paper aims at providing an overview of the current status and the trends in the manufacture and use of mineral (inorganic) glass ophthalmic lenses. The focus is on the properties, manufacturing processes, and use patterns for mineral lenses, but we briefly touch upon the trend towards newer organic materials that are substituting inorganic glass. The glass itself is evolving, both through improved composition and value added treatments like photochrome treatment, polarizing filters, and antireflection coatings. We examine these important treatments in detail, and also briefly look at some newer coatings and treatments that are emerging in this field.

Keywords:

• Ophthalmic lens
• Antireflection coating
• Refractive index
• Abbe number