The duration of taking lecithin complex iodine for patients with Aedes aegypti needs to be decided according to the progress of the disease, and generally may need to be taken for about 3 months. Aedes aegypti is a common symptom in ophthalmology, which can be divided into physiological Aedes aegypti and pathological Aedes aegypti according to the different causes. Physiologic Aedes aegypti generally does not affect vision and does not require special treatment. Pathologic Aedes aegypti is usually caused by vitreous lesions, which requires timely treatment according to the cause. Pathological Aedes aegypti can be treated by oral lecithin complex iodine, the iodine preparation in lecithin complex iodine can promote the vascular circulation of the eye, promote the absorption of exudate, so as to reduce the patient’s Aedes aegypti, and is usually taken for about 3 months. It is recommended that patients take the drug under the guidance of the doctor, avoid unauthorized use of drugs, so as not to cause adverse consequences.