微量元素在医学上的意义虽早已为人们注意,但仅近廿年来方被深入了解。至于眼科有关微量元素资料,近年来始见零星报导。然而,仅此已知微量元素研究在眼科中已有着广阔的前景。现就主要文献资料综述如下。一、体内微量元素简介自然界的微量元素对人体说来可分三类,一类是非必需的,一类是可能需要的,另一类是必需的。必需的微量元素对人体有着特殊的生理作用:维持生命活动,保证生长发育及生殖功能的正常进行。如锰、铁、钴、铜、锌、钼、碘、钒、铬、氟、硒、硅、镍、锡等。其特点是以微量存在于人体所有组织中,量较恒定,过量则有毒性,而有害与有益量之间差距很小。通常当缺 Although the medical significance of trace elements has long been paid attention to, but only in the past 20 years has been in-depth understanding. As for the information on trace elements in ophthalmology, sporadically reported in recent years. However, only this known trace element study has broad prospects in ophthalmology. The main literature is summarized below. First, the introduction of trace elements in the body Trace elements in nature can be divided into three types of human body, one is not necessary, one is likely to need, and the other is required. The necessary trace elements on the human body has a special physiological role: to maintain life activities, to ensure the normal growth and development and reproductive function. Such as manganese, iron, cobalt, copper, zinc, molybdenum, iodine, vanadium, chromium, fluorine, selenium, silicon, nickel, tin and so on. It is characterized by the trace exists in all tissues of the human body, the amount is relatively constant, the excess is toxic, and the difference between harmful and beneficial amount is small. Usually lacking