Conjunctivitis is divided into four categories: viral, bacterial, chlamydial and allergic. Conjunctivitis is all somewhat contagious, so prevention is important! Patients with conjunctivitis should pay attention to the following points: 1. Pay attention to hygiene and wash your hands regularly. It is best to wash your face with running water. 2. Eat a light diet and avoid spicy foods. The first thing you need to do is to take care of yourself. Wear tinted glasses when you go out. Follow the doctor’s instructions to use the correct eye drops on time.