Example: “Doctor, you help to see, recently the child always blinked, rubbing eyes, the eyes are rubbed red and swollen, do not know what is going on.” In the hospital’s ophthalmology clinic, Ms. Liu, a citizen, was taking her 2-year-old son to the doctor. After an examination, the doctor diagnosed Ms. Liu’s son as suffering from allergic conjunctivitis. It is understood that allergic conjunctivitis is one of the most common diseases in ophthalmology, it is a series of immune response of human conjunctiva to external allergens inflammatory eye disease, adults or children can get the disease, allergic children are more likely to “hit”. In addition, spring is also the season of allergic conjunctivitis when flowers are in full bloom. All kinds of pollen float in the wind, and these floats can easily enter and irritate the human eye, leading to allergies. Some newly decorated rooms, fish and fresh food, and carpeting may also emit allergenic substances, and some allergic children are prone to allergic conjunctivitis. However, because allergic conjunctivitis often shows mild conjunctival congestion and no other obvious symptoms, it rarely attracts the attention of parents, and frequent eye rubbing by babies is a sign.