Permeation of a drug through the cornea may be studied in vitro by using either the excised cornea of slaughtered animals or an organotypic cornea construct [1]. To compare drug permeability data reported in the literature for excised porcine cornea [2] with those from cornea constructs, the cultivation of an organotypic porcine cornea is required. The porcine cornea consists of three major cel...

Human cornea is the anterior transparent layer of the eye globe. It is an avascular tissue that is directly exposed to the external environment. Cornea focuses the surrounding image by refracting the light through a crystalline lens to the retina. Therefore, its clarity should be well maintained for optimal visibility [1]. Cornea is a multilayered tissue and each layer has its own specificity. ...

results the findings of this study showed that in most selected countries, primary care services were provided by the private sector and the public sector has been mostly functioning as a supervisor in this area, but in iran, primary care services were provided by the government. the findings of this study also showed that hospital services in iran and selected countries (second and third level...