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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Chin Chem Lett. 2017 Jul 26;28(9):1817–1821. doi: 10.1016/j.cclet.2017.07.022

Fig. 1.

Fig. 1

Illustration that represents the different structures of the eye, divided in the anterior and posterior segments. The different barriers that drugs need to overcome after topical installation are indicated with a red star, and a detailed representation is also provided. The ocular targets to treat a specific disease are indicated with a green star, if they are in the anterior segment, or with a yellow star, if they are located in the posterior segment. Reproduced from Ref. [4] with permission. Copyright 2015, Elsevier.