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. 2023 Apr 2;9(4):292. doi: 10.3390/gels9040292

Figure 3.

Figure 3

Overview of creating smart nanogels to control drug delivery. According to their response mechanisms, smart nanogels are classified as chemical, physical, or biological stimuli. Synthetic nanogels are chosen to control drug release based on material properties, disease environment, and drug application. However, for the eye, only temperature, pH, and enzyme responses are currently available.