First Author: A.Abulafia ISRAEL
Co Author(s): A. Michaeli E. Assia
Purpose:
To compare an indirect infrared thermal imaging system to a direct intra-stromal temperature measurement during phacoemulsification
Setting:
Department of ophthalmology, Meir Medical Center, Kfar Saba, Israel
Methods:
In this prospective experimental study using porcine eyes, temperature recordings were taken at the incision site (under several phacoemulsification techniques) using two different measuring methods. Group 1 using a direct contact measurement: A 20G slit knife was used to create a corneal tunnel parallel to the phaco incision site. A thermocouple electrode connected to a temperature recorder was inserted. Temperature measurements were taken at baseline and every 15 seconds during phacoemulsification. Group 2 - using a non-contact measurement: Continuous measurements were taken using an infrared thermal imaging (IR) system. Data was retrieved and analyzed using digital software.
Results:
Correlation between the two temperature measurement systems was calculated by the following steps: Pearson Correlation (R) for each surgical method; R-square for each surgical method (R2); Average of R-square for all methods; Final R was extracted from the average R-square by the simple square root. A high correlation (r=0.93, P<0.001) was found between the temperature values recorded by the two measuring methods.
Conclusions:
An Infrared thermal imaging system is a non invasive valid method for corneal temperature assessment during phacoemulsification. FINANCIAL DISCLOSURE?: No
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