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S.K. and K.T. are from Tsubota Laboratory, Inc. and were involved with this work as authors. K.T. founded the company and is the CEO, while S.K. has been employed as the CTO. The following authors hold stocks of the company: S.K., H.T., T.K. and K.T. An international patent (WO 2015\/186723) by Tsubota Laboratory, Inc. has been registered in Japan as JP 6085722 and in US as US 10133092. JINS Inc. has been selling a violet-light related product called \u201cJINS Violet Plus\u201d lens in Japan and China, while Tsubota Laboratory, Inc. and JINS Inc. have jointly filed an international patent (WO 2017\/090128) in relation to this product. The authors HT, TK and KT are inventors for these two patents.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"34319"}}