METHODS:The changes of expresson level of rhodopsin mRNA in light damaged rat retinas and the changes on retinal morphology were observed through the technique of in situ hybridization and electron microscopy.

• 方法：应用原位杂交和电镜技术对光化学损伤大鼠视网膜视紫红质基因mRNA表达情况及视网膜形态学损伤性改变进行动态观察。