I feel very stressed and depressed today when surgery. Firstly, the vitrectomic probe was polluted by a trainee nurse, then I was pulluted by the probe. I had to change my gloves. Then another nurse kicked off the power line. The vitrectomy machine couldn’t work properly. Tonometer of the eye droped down quickly. This would cause burst hemorrhage in the surgery process. And the patient would lose his vision and had his eye removed. What a miserable thing would happen!! Fortunately, the consequences didn’t occur.