Illumination on (n=5) P value Illumination off (n=5) Pvalue Temp(°F) 41°F 59°F 77°F 0.785** 41°F 59°F 77 0.834** Incidence of  airbubbles*(counts/500 shots) 3.2±0.8 2.8±1.6 3.0±1.2   2.8±1.2 2.8±1.5 3.2±1.5   Temp: Temperature *The incidence of air bubbles was calculated as counts for 500 shots of endolaser photocoagulation with the Purepoint® Laser. ** P Kruskal-Wallis test

Table 1: The incidence of air bubbles at the tip of the endolaser probe according to the temperature of the balanced salt solution and the use of illumination on the illuminated endolaser probe.