In vitro biocompatibility test using newly generated, stably eGFP-expressing cell lines (CrFK, fibroblasts; NTM, trabecular meshwork cells; BCE, endothelial cells; N = 3). Because shunts are not translucent, a reflection-based fluorescence assay had to be developed. (A) Example of transduced CrFK cells on GS. Graphic representations of cell growth rates on days 2 through 5 after seeding on GS (B) and PS (C).