泪水为略带乳白色的透明液体,比重稍大于水,在1.004～1.005之间,呈弱碱性,含微量矿物质,在约占百分之一的矿物质中,几乎一半是氯化钠(盐),所以一般人的眼泪是咸的。但是糖尿病病人的泪水,则是甜腻腻的。 眼泪的功能:它能润滑眼球,使黑眼球保持晶莹透明。 1.随着眼皮的快速眨动,倾泻下的泪水可将异物污水或小飞虫等冲刷出眼,使眼球免被伤害。 Tears are a slightly opalescent clear liquid, slightly heavier than water, between 1.004 and 1.005, weakly alkaline and trace minerals, accounting for almost 1% of all minerals, almost half of which is sodium chloride ( Salt), so most people’s tears are salty. But the tears of diabetic patients, it is sweet and greasy. Tear function: it can lubricate the eye, make the black eye keep crystal clear. 1. With the rapid eyelid blinking, pouring tears can be foreign body sewage or small bugs washed out of the eye so that the eye from being hurt.