Bibliometric analysis of hotspots and trends of global myopia research.

Aim: To gain insights into the global research hotspots and trends of myopia.

Methods: Articles were downloaded from January 1, 2013 to December 31, 2022 from the Science Core Database website and were mainly statistically analyzed by bibliometrics software.

Results: A total of 444 institutions in 87 countries published 4124 articles.

[Simultaneous determination of four components in the compound child phenobarbital tablet using ultraviolet spectrophotometry].

Objective: To establish a method to determine four components in the child phenobarbital tablet.

Methods: Ultraviolet spectrophotometry was used to determine four components without separation.

Results: The contents of aspirin, phenacetin, caffeine and phenobarbital could be measured simultaneously.