Ophthalmology and its adnexal disciplines are in the grip of an explosion in information technology（IT），as are most branches of medicine．Not only do we have a bewildering number of published periodicals，textbooks，and society newsletters to sift，select，and assimilate information from，but we now also have an increasing array of electronic sources of information．Web sites which are advertisements and publicity ventures for biomedical publishers，manufactures，and traders also exist in abundance．The true nature of a web site is often not apparent until time has been expended，or wasted，in finding it and reading it．The internet has also been used specifically to compile a database of ophthalmological practice and，in the process，it has been used a research tool．A further aspect of the internet，which is potentially useful for even the busiest professional，is the E-mail discussion group．The fundamental function of internet was introduced as follows：E-mail，news groups，lister，file transfer protocol（FTP），telnet，gopher，world wide web as well as their basic concept and applied condition．The ophthalmology related to internet webs were discussed mainly and an example was in point how to get ophthalmologic information through them．%介绍了Internet的基本功能：电子邮件，新闻组，通信讨论组，文件传输协议，远程登录，校园信息服务系统，全球信息网的基本概念和应用条件。重点介绍了与眼科学有关的Internet网址，并举例说明了如何通过这些网址获取眼科学的信息。
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