title: Retraction. Polyurethane hydrogel colored contact lens with gradient water content.
authors.affiliation: Oculus Ltd., Jalan Mesin, Singapore 368813.
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Oculus Ltd., Jalan Mesin, Singapore 368813.
authors.forename: Babu
authors.initials: B
authors.lastname: Narayanswamy
authors.affiliation: Oculus Ltd., Jalan Mesin, Singapore 368813.
authors.forename: Mike
authors.initials: M
authors.lastname: Chew