This is a very common symptom in ophthalmology, mainly due to vascular sclerosis caused by hypertension, so in the case of excessive staying up late or violent coughing or vomiting, it may lead to the rupture of the capillaries under the conjunctiva, thus manifesting as dotted or lamellar bleeding on the conjunctiva. In this case, it is recommended to apply local cold compresses at the early stage, and after 48 hours, change to local hot compresses 2-3 times a day for 10-15 minutes each time, and the symptoms can gradually return to normal in 7-12 days. However, if this symptom occurs repeatedly, we should pay attention to control the blood pressure of the whole body in the normal range, only in this way can we avoid the recurrence of subconjunctival hemorrhage.