A traumatic pupil dilation of up to 6mm is considered moderate, and although it is not very serious, it can have an impact on the quality of vision. Trauma may damage the patient’s pupillary sphincter or the branch of the arterio-ocular nerve that innervates the pupillary sphincter, resulting in dilation of the patient’s pupil, which is called traumatic dilation. A dilated pupil can lead to discomfort such as photophobia and glare. Although a pupil dilation of about 6mm is not very serious and is considered moderate, it can affect the patient’s quality of vision. In the early stage of pupil dilation after injury, patients can follow the doctor’s instructions to take oral neurotrophic drugs, such as methylcobalamin, vitamin B12, etc., to promote the recovery of pupil function. If the drug conservative treatment is ineffective, and the patient has a combination of traumatic cataract and other conditions, traumatic cataract surgery can be performed together with the pupil molding surgery, in order to narrow the pupil. It is recommended that patients with traumatic eye injuries seek timely medical attention to evaluate their condition and follow the doctor’s instructions for treatment.