If a macular lesion in the fundus requires an injection, there may be macular edema in the fundus, or neovascularization in the macula, which may be caused by diabetic retinopathy, venous obstruction, or choroidal neovascularization. The effect of the injection is anti-VEGF treatment, which is to stop the formation of macular edema and promote the absorption, and also to prevent the growth of neovascularization, so that the neovascularization shrinks and achieve the effect of improving vision. There are two main types of anti-VEGF injections on the market, one is razumab and the other is Compazepam, both of which are very effective, but the treatment cycle is very short, and the effect becomes weak in about 1 month, requiring a repeat injection. Three consecutive injections are given and treated with laser or re-injection depending on the situation.