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Figure 2. Design and characterization of stimuli-responsive hydrogels for ocular tumor therapy. (A) Representative crosslinking strategies used to construct stimuli-responsive hydrogels, including chemical, physical, photoinduced, and grafting-based crosslinking; (B) Main characterization approaches for stimuli-responsive hydrogels, including rheological behavior, morphology, swelling and degradation profiles, and drug-release kinetics. Created in BioRender. Li, H. (2026) https://BioRender.com/p3im2n2.