MARUKO Ruka
   Department   School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine
   Position   Endowed Assistant Professor
Article types Original article
Language English
Peer review Peer reviewed
Title Changes in vitreous temperature during intravitreal surgery.
Journal Formal name：Investigative ophthalmology & visual science
Abbreviation：Invest Ophthalmol Vis Sci
ISSN code：15525783/01460404
Domestic / ForeginForegin
Volume, Issue, Page 55(4),pp.2344-9
Author and coauthor Iguchi Yuko, Asami Tetsu, Ueno Shinji, Ushida Hiroaki, Maruko Ruka, Oiwa Kazuhiro, Terasaki Hiroko
Publication date 2014/04
Summary PURPOSE:To determine how different intraoperative surgical procedures affect the midvitreous temperature.METHODS:The vitreous temperatures were monitored continuously with an intravitreal thermocouple in 87 eyes of 81 cases undergoing vitrectomy. Thirty-three eyes had diabetic retinopathy (DR), 35 eyes had an epiretinal membrane, and 19 eyes had an idiopathic macular hole. In eyes with DR, the correlation between the number of photocoagulations (PCs) and the change in temperature was analyzed. The temperature was also recorded before and after combined phacoemulsification and aspiration (PEA) and vitrectomy in 10 eyes.RESULTS:The average midvitreal temperature before the vitrectomy was 33.0 ± 1.3°C, 30.7 ± 1.7°C after core vitrectomy, 32.9 ± 1.3°C after membrane peeling, and 29.2 ± 1.4°C after peripheral vitrectomy. The temperature before PC was 29.8 ± 1.3°C, and it increased to 31.5 ± 1.9°C post-PC. The differences in the temperatures between consecutive procedures were significant (P < 0.01, respectively, Wilcoxon signed-rank test). The difference in the temperatures of the same procedures among the different diseases was not significant except after membrane peeling. A significant correlation was detected between the number of PCs and the duration of the PCs, and between the duration of PCs and the change in vitreous temperature after PC (r = 0.719, P = 0.0010, and r = 0.800, P = 0.0002, respectively, Spearman's rank correlation coefficient test). The temperature after PEA decreased significantly by 2.3°C.CONCLUSIONS:Our results showed that vitreous temperatures vary during different vitrectomy procedures.
DOI 10.1167/iovs.13-13065
PMID 24508794