A stye, commonly known as a needle’s eye, is clinically known as acute blepharitis, a red mass that forms when the dermatolipid or lid gland at the root of the eyelash follicle at the edge of the eyelid becomes infected. Wheals are most often caused by Staphylococcus aureus infection when the patient has a weakened resistance, malnutrition, or blepharitis, and can sometimes recur. The clinical classification of mydriasis is divided into two categories: external and internal mydriasis. External mydriasis is an acute purulent inflammation of the sebaceous glands or follicles at the base of the patient’s eyelashes, also called a lid margin boil, and is common in people with poor hygiene, weak constitution, or refractive error. Internal mydriasis is an acute purulent inflammation of the patient’s lid glands, often accompanied by a pustule on the conjunctival surface of the lid and localized redness, pain, and swelling. Patients with mild wheals can apply local heat to promote circulation and help the inflammation dissipate and relieve symptoms. If symptoms persist without relief, antibiotic treatment and surgical drainage of the pus are required. Commonly used antibiotics include levofloxacin, chlortetracycline, and tobramycin. Surgical drainage of pus should be carried out under the guidance of a doctor, and you should not squeeze the pus at home by yourself to avoid sepsis caused by bacteria entering the blood after squeezing.