Histologically, in the cryopreserved retina, fluid in neural fiber and outer plexiform layers, as well as in cone and rod layer, was slightly more than normal. 光镜下见深低温保存组视网膜神经纤维层、外网层及杆锥层积液略多;
Outer plexiform layer is composed of three layers of different kinds of cells: cone layer, horizontal cell layer, and bipolar cell layer. 视网膜外网膜层由三层不同种类的细胞构成,分别为:光感细胞层、水平细胞层、双极细胞层。