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. 2018 May 24;14(1):1–15. doi: 10.1016/j.ajps.2018.04.008

Fig. 3.

Fig 3

In-situ forming gels process. The formulation is liquid when instilled into the eye which undergoes gel formation rapidly in the cul-de-sac of the eye in response to environmental changes such as pH, temperature and ion; finally release the drug slowly under physiological conditions.