A bit of diesel in eyes is okay. Before you flush them out of eyes, do not blink eyes though you feel unwell. Because it is easy to cause chemical reaction between diesel and substances in eyes. When diesel entered eyes, flush them out with clean and warm water. And then it is time to blink eyes to get rid of the rest. Next lay down and stay fit. If pain and irritation still exist after a few minutes, you can drop some basic and counter eye drops to alleviate your condition. Plus, you can place cucumber slice on eyes before you go to bed to fresh eyes and contain water at night. Then you can be okay tomorrow.