Polar maps of rθ for while increasing IOP at (a) 15, (b) 20, (c) 25, and (d) 30 mmHg and while decreasing IOP at (e) 25, (f) 20, and (g) 15 mmHg. Cornea 1 was untreated while cornea 2 was CXL-treated. Please note, the rθ scales are only the same for a given IOP for each sample.