It is normal to have dark spots in the field of vision after retinal laser photocoagulation, and it is also common for patients to experience dimming of vision. The laser spot formed by retinal laser photocoagulation disrupts the function of the retina, so dark spots are formed in the field of vision. During laser treatment, the laser spot is placed as close as possible to the periphery of the retina to minimize the effect of the dark spots on visual function. Retinal laser photocoagulation is a commonly used treatment for fundus disorders. It mainly destroys the function of part of the retina through laser photocoagulation, thus preventing the retina from consuming too much oxygen and improving the overall hypoxia of the retina, thus avoiding the formation of neovascularization and other fundus disorders, and is used in the treatment of diseases such as diabetic retinopathy, retinal vein embolism and so on. It is recommended that patients after retinal laser photocoagulation follow the doctor’s instructions for care, regular review, and timely consultation when discomfort occurs.