Left eye macular degeneration is a generalization; there are more types of macular degeneration, including macular cleft, anterior membrane, and degeneration. The most common of these is macular degeneration, which refers to exudative choroidal retinal lesions occurring in and around the macula of the left eye, and subretinal lesions such as neovascularization and hemorrhage may be present. Macular degeneration is a common disease affecting the macula in the elderly, and is more common in women than in men. The cause of the disease may be related to heredity, hypertension, diabetes and other causes of vascular sclerosis, smoking, alcohol consumption, and chronic photodamage from blue light. Pre-macular membrane is generally caused by chronic inflammatory stimulation leading to the formation of proliferative membrane in front of the macular area of the retina, while macular cleft is related to the proliferative membrane in front of the retina pulling and tearing the retina in the macular area. Patients with macular degeneration are advised to seek timely hospital consultation to assess their condition and follow the doctor’s instructions for treatment.