物理功能：1．阻挡来自脉络膜血流而视网膜所不需要的物质分子，起保护视网膜的屏障作用。2视网膜粘附于色素上皮的主要力量是由色素上皮对特殊液体的传输（泵作用）所产生的。3．合成视网膜下间隙内的某些枯多糖，对视网膜粘附于色素上皮起部分作用。4色素上皮细胞之微绒毛与? Physical functions: 1. Blocking the retina from the choroidal bloodstream and the material molecules that do not need to protect the retina’s barrier function. 2 retinal adhesion to the pigment epithelium is the main force caused by the pigment epithelium of the transmission of special liquid (pump) generated. 3. Some of the synthesis of sub-retinal clearance of dry matter on the retina adhesion to the pigmented epithelial part of the role. 4 pigment epithelial cells with microvilli and?