eye glasses

in spite of rapid advances in keratorefractive surgery in recent decades, the most common method for refractive error correction throughout the world is glasses, the discovery of which is attributed to the persians. other advantages include protection of the eye against trauma and radiations, correction of phorias and tropias and cosmetic reasons. the purpose of this article is to describe and review different components of glasses (frame, temple and lens), sunglasses, photochromic and polarizing glasses, antireflective and mirror coats, progressive additional lenses and also recommendations about frame selection.