Figure 7 Corneal tissue engineering Part a (first row) is from REF. 192, Nature Publishing Group. Part a (second row) is reprinted with permission from REF. 144, Massachusetts Medical Society.Part a (third row; middle panel) is reproduced with permission from REF. 154; permission conveyed through Copyright Clearance Center, Inc. Part a (third row; right panel) is reproduced with permission from REF. 193, Wiley. Part b (first row; synthetic hydrogel) is courtesy of J. Chodosh, Harvard Medical School, US. Part b (first row; biological hydrogel) is adapted with permission from REF. 153, AAAS. Part b (second row) is reproduced with permission from REF. 155, Elsevier. Part b (third row; left and middle panels) is reproduced with permission from REF. 161; the publisher for this copyrighted material is Mary Ann Liebert, Inc. Part b (third row, right panel) is reproduced with permission from REF. 160, Public Library of Science. Sadtler, K. et. al. (2016) Design, clinical translation and immunological response of biomaterials in regenerative medicine Nat. Rev. Mater. doi:10.1038/natrevmats.2016.40