The material used to fill the vitreous cavity after macular tear surgery is determined by the patient’s condition, and there is no comparison between inert gas and air. In order to make the retina fit, the vitreous cavity is usually filled with gases or liquids, and air, inert gases and silicone oil are commonly used in the clinic. Air is mostly self-absorbed in 3 to 7 days, while inert gases have a relatively longer duration of action, lasting 1 to 3 weeks, but there is no difference between the two, and the specific filler is related to the patient’s condition. If a macular tear with retinal detachment is found during surgery, it is often necessary to fill it with inert gas or silicone oil to press against the retina and promote retinal reset. If a simple macular tear is found during surgery, air filling is usually sufficient. It is recommended that patients with macular schisis be seen promptly for evaluation of their condition and treatment as prescribed by their physician.