Shitanoki, Yuki Copolymer-based progressive addition lens with graded index designed for astigmatism and distortion correction. [electronic resource] - ACS applied materials & interfaces Apr 2009 - 907-12 p. digital Publication Type: Journal Article ISSN: 1944-8244 Standard No.: 10.1021/am900017r doi Subjects--Topical Terms: Astigmatism--rehabilitationEquipment DesignEquipment Failure AnalysisEyeglassesHumansLensesMaterials TestingPolymers--chemistryRefractometry