The causes of fundus hemorrhage are numerous, mainly caused by trauma and the eye itself. Common lesions that cause fundus hemorrhage include vitreous traction, fundus lesions caused by diabetes and hypertension, central retinal vein obstruction, and fundus macular degeneration. Fundus hemorrhage is a common fundus disease in ophthalmology and a blinding eye disease. Fundus hemorrhage can be caused by lesions of the eye itself or by systemic diseases. Among the systemic diseases diabetes and hypertension are the most common causes. A long history of diabetes can cause diabetic retinopathy and fundus hemorrhage. A longer history of hypertension can also cause hypertensive retinopathy, which can eventually lead to fundus hemorrhage if not effectively controlled as the disease progresses. Ocular vascular disease accounts for most of the lesions in the eye itself. Severe vitreous clouding and posterior vitreous detachment may pull on the retinal vessels and cause rupture of the retinal vessels, thus causing fundus hemorrhage. Of course, there is also the ocular trauma mentioned above, which can directly cause fundus hemorrhage if the retina is injured. In summary, fundus hemorrhage that is not caused by trauma is usually indicative of a serious fundus disease or a serious systemic disease.