Figure 5
From: Influence of drug and polymer molecular weight on release kinetics from HEMA and HPMA hydrogels

Showing the stability of drug concentration over the course of 30-days for each of the compositions with varying molecular weight and drug. The concentration of target molecule, relative to original loading is shown, in %, on the -axis. The x-axis demonstrates the time, in days, of measurement. (a) Tetrahydrozoline 0.05%, (b) Naphazoline 0.1%, (c) Dorzolamide 2.0%, (d) Timolol 0.05%.