4-year-old boy with influenza A fever, need to be actively taken to reduce heat treatment, the eyes can not see clearly may be caused by fever, but need to rule out the eye itself, it is recommended to seek medical attention, clear causes and then targeted treatment. Influenza A is the influenza A virus causes a respiratory infectious disease, the disease can be manifested as a sudden high fever, poor mental health, etc., high fever may lead to the child briefly eyes can not see things. At this time, parents if the temperature does not exceed 38.5 degrees, you can use physical cooling, such as using warm towels to wipe the body, etc., if the temperature exceeds 38.5 degrees, you can take antipyretic drugs such as acetaminophen. At the same time, you can take antiviral drugs such as oseltamivir phosphate under the guidance of a doctor. In addition, during the period of influenza, it is recommended to give your child a light diet and drink plenty of water to avoid dehydration; pay attention to your child’s daily care and isolate him/her at home. If your child’s symptoms are not relieved by the above methods, it is recommended that you consult a doctor, complete the relevant examinations, identify the cause of the disease, and treat the symptoms. Note that drugs should be used under the guidance of a doctor, avoid unauthorized use of drugs, so as not to cause adverse effects.