| Abstract [eng] |
Aim: To review the coatings used on ophthalmic lenses and their clinical effect on human vision and eye health. Objectives: 1) To describe eyeglass lens coatings and their physical mechanism of action; 2) to review the data found in the literature on the clinical effect of eyeglass lens coatings on the prevention or treatment of eye diseases and the quality of vision. Methods: A literature review was performed using databases PubMed, ScienceDirect, Academic Search Ultimate (EBSCO) and Elsevier Clinical Key. The search year and publication language were not limited. English search keywords used: eyeglass lenses, eyeglass lenses, blue light blocking coating, anti-reflective coating, ophthalmic lenses, ultraviolet blocking coating, ultraviolet filtering coating. 48 literature sources which abstracts or theses indicated the purpose of this literature review were selected and analyzed. Results and conclusions: The following coatings are widely used on eyeglass lenses: anti-reflective, blue light blocking, ultraviolet light blocking, hard and hydrophobic coatings. There is no scientific evidence that wearing blue light blocking eyeglasses slows the progression or prevents age-related macular degeneration. Blue light-blocking coatings do not affect the quality of vision and the reduction of eyestrain but can reduce scotopic contrast sensitivity. The anti-reflective coating reduces reflections and improves the quality of vision in glare conditions. Glasses with a coating that blocks ultraviolet light should be worn by people who spend a lot of time outdoors and by patients receiving photochemotherapy with ultraviolet A light. |
