Intraocular pressure measurement in mice: A comparison between Goldmann and rebound tonometry

C. Y. Kim, M. H. Kuehn, M. G. Anderson, Y. H. Kwon

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Purpose: The development of mouse models of glaucoma requires methods to accurately measure the intraocular pressure (IOP) in this species. The aim of this study was to compare the accuracy of IOP measurements in mice between modified Goldmann and rebound tonometers. Methods: IOP was measured either with a modified Goldmann or a rebound tonometer while simultaneously measuring the IOP using invasive manometry in enucleated eyes and in vivo. The level of IOP was controlled hydrostatically. The agreement and correlation between the IOP determined by invasive manometry and by either noninvasive method was evaluated. In addition, the IOP was determined by both noninvasive methods in a cohort of mice with laser-induced ocular hypertension (OHT), and the agreement and correlation between the two tonometry methods were evaluated. Results: Measured IOP by either noninvasive tonometer correlated well with those recorded simultaneously by invasive manometry (r = 0.98 for rebound and r = 0.94 for Goldmann). In mice with OHT, the IOP correlation between rebound and modified Goldmann was moderate (r = 0.71); the IOP measured by modified Goldmann tonometry was consistently higher than that by rebound by approximately 5 mmHg. However, the relative per cent increases in IOP were similar between the two methods. Conclusion: Both noninvasive methods of IOP measurements in mice are suitable to detect changes in IOP although rebound tonometry correlated better with the invasive manometry readings. The results suggest that the relative, rather than absolute, IOP offers a more reliable means of correlating findings from studies using different tonometers.

Original languageEnglish
Pages (from-to)1202-1209
Number of pages8
JournalEye
Volume21
Issue number9
DOIs
Publication statusPublished - 2007 Sep

All Science Journal Classification (ASJC) codes

  • Ophthalmology
  • Sensory Systems

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