A few days ago, the news of "boys splashing into their eyes when playing with desiccant, and blindness caused by eyeball dissolution" once again boarded the hot search. In recent years, it is common for children to be injured by dangerous chemicals. Today, ophthalmologists come to talk about the emergency treatment of eye chemical injuries. What is ocular chemical injury? Eye chemical injury refers to the eye injury caused by chemicals. It is a serious eye emergency. In clinical manifestations, there can be only mild eye irritation symptoms (such as redness, tears and pain) without residual sequelae; In severe cases, it can lead to deep eye tissue necrosis, scar formation and adhesion, thus affecting eye appearance and vision; More serious cases can lead to global inflammation, secondary glaucoma, and eventually complete blindness and eyeball atrophy. The severity of damage depends on the type, concentration, dose, contact time, contact area, temperature, action pressure, etc. Which common chemicals are easy to hurt? Chemical substances are mainly divided into acidic and alkaline. In addition to strong acid and alkali for industrial use, common acidic substances in daily life and work include toilet cleaner and some pesticides; Common alkaline substances include 84 disinfectant, washing powder, food desiccant, etc. Which chemical damage is more serious? When acidic substances contact the eye tissue, the tissue protein will solidify, the infiltration into the eye is slow, and the edge of the lesion is clear. The lesion is generally non progressive, which only occurs at the contact site, and the subsequent recovery can be judged within a few hours of injury. After contacting the eye tissue, alkaline substances will dissolve fat and tissue protein, penetrate into the eye quickly and have strong penetration, so as to affect the surrounding tissues that are not directly contacted by alkaline substances, and the lesion damage shows progressive progress. Therefore, generally speaking, alkali burn has faster progression, longer lesion duration, slower recovery and worse prognosis than acid burn. How does eye contact chemical substance carelessly do? The first step is to see a doctor immediately? In fact, it is wrong to do so. Even if you get to the hospital and see a doctor as soon as possible, it will take about half an hour. During this time period, chemicals have caused irreversible damage to the eyes. Therefore, the first step is to remove the chemicals in the eyes as soon as possible. If it is a liquid chemical substance, it is necessary to continuously flush the eye surface with the fastest available clean water source (such as mineral water, tap water, normal saline, etc.) for at least 15 minutes. During flushing, open the upper and lower eyelids, expose the conjunctival sac as much as possible and rotate the eye to make the flushing more sufficient. In case of monocular injury, pay attention to the low position of the injured eye to prevent the flushing fluid from flowing into the good eye. If it is a solid chemical substance (such as quicklime, etc.), it may react with water and cause more serious damage, so it cannot be washed immediately. It is necessary to remove the residue in the eye with a cotton swab dipped in paraffin oil or vegetable oil as soon as possible, and then rinse the injured eye fully with water. After flushing, the next step is to seek medical treatment as soon as possible. When seeing a doctor, try to clearly inform the doctor of the name of the chemicals in the eyes. You can carry or take photos to preserve the chemical outer packaging, so that the doctor can understand the acidity and alkalinity of the chemicals, so as to formulate a treatment plan. (outlook new era)