In daily life, if chemicals with strong corrosive effect such as caustic soda and sulfuric acid accidentally enter our eyes, they often cause serious damage to the cornea and intraocular tissues. On-site rescue is the key to treatment when such accidents occur, and if we do not do any treatment but rush to the hospital to find a doctor, we often lose the best time for rescue and treatment, resulting in irreversible consequences. In on-the-spot first aid, timely and regular flushing is the primary guarantee to avoid vision damage. When this happens, look for water to flush the injured eye as soon as possible, the sooner the better, at this point a few seconds earlier and a few seconds later, the consequences will be very different. The choice of water quality does not have to be demanding, what kind of water is used, cold boiled water, tap water, river water, and even not very clean water can be, not because of the search for clean water and delay. If there is running water nearby, you need to head down the injured eye side, use your fingers to pick open the eyelid, flush with water, try to make the corrosive chemicals that enter the eye all flushed out. If you can find a basin of water, the injured person should immediately dip his face into the water, while doing the movement of opening and closing the eyes, while using fingers to constantly open and close the upper and lower eyelids, while turning the eyeball so that the eye chemicals in full contact with water and dilution, at this time the rescuer can call a basin of water in order to replace the cleaning. I would like to remind you that the amount of water should be enough, and never stop halfway because of the discomfort of the eye when rinsing. After rinsing, you should go to the hospital immediately for examination and treatment by an ophthalmologist. However, if lime enters the eye, do not flush it directly with water. The correct treatment is to use a cotton swab or a corner of a clean handkerchief to pluck out the lime powder and then rinse with water, and don’t forget to go to the hospital for examination and treatment after rinsing.