title: [The impact factor and citation frequency of Chinese Journal of Ophthalmology from 2000 to 2009].
abstract: OBJECTIVE
  From the point of impact factor and citation to evaluate the academic level and influence of Chinese Journal of Ophthalmology (CJO).
  
  
  METHODS
  Using the impact factor (IF) data provided by China Science and Technology Journal Citation Reports (CJCR), and the information of Chinese Medical citation Index (CMCI/CMCC integrated version), the citations from CJO were collected and analyzed with bibliometric methods.
  
  
  RESULTS
  From 2000 to 2008, the IF of CJO were 0.573, 0.863, 0.702, 0.745, 0.877, 1.031, 0.807, 0.875 and 0.533. From 2000 to 2009, 2485 papers were published in CJO, 1562 of them were referenced (9294 times). The frequency of total citation rate was 62.86%. The region with the highest citation frequency was Guangdong (2661 times), followed by Beijing (2200 times), Shandong (926 times) and Shanghai (901 times). As to the institution, the top of rank was Zhongshan Ophthalmic Center of Sun Yat-Sen University (with 277 papers, 201 citations and 2193 times of citation frequency) and Beijing Tongren Eye Center (with 197 papers, 106 citations and 507 times of citation frequency).
  
  
  CONCLUSIONS
  The IF of CJO was stable, and ranked first in domestic academic of Ophthalmology. Meanwhile, it had a higher frequency of Citation, which shows that CJO has high quality and strong influence, and become one of main core ophthalmology journals in China.
authors.affiliation: Sun Yat-sen University, Guangzhou, China.
authors.forename: Kun-fang
authors.initials: KF
authors.lastname: Wu
authors.forename: Feng
authors.initials: F
authors.lastname: Wen
mesh_terms: D004212:Academic Dissertations as Topic; D015706:Bibliometrics; D002681:China; D055811:Journal Impact Factor; D009885:Ophthalmology / Q000706:statistics & numerical data*; D010506:Periodicals as Topic / Q000706:statistics & numerical data; D011643:Publishing