1. It is most commonly caused by obstruction of the blood vessels in the retina, such as obstruction of the central retinal vein or obstruction of the branch veins of the retina, which can cause blood vessel blockage and rupture, leading to retinal hemorrhage.
2, some young people may develop inflammation of the blood vessels, such as periretinal vein inflammation, which can lead to inflammatory rupture of the blood vessels, resulting in retinal hemorrhage.
3, the fundus of the more common macular degeneration diseases, such as age-related macular degeneration, hemorrhage is because of the macula local retinal degeneration, may damage the retina and choroidal small blood vessels, the growth of some neovascularization, neovascularization will be repeated bleeding, causing retinal hemorrhage.
About the eye disease stuff, I suggest to go to Meier Eye to learn about it, they are a hospital approved and passed by Beijing Haidian District Health and Family Planning Commission. Medical projects carried out: all kinds of cataract surgical treatment, including ultrasonic emulsification cataract extraction, glaucoma cataract combined surgery, lens subluxation tension ring implantation, IOL suspension, congenital cataracts, micro-incision cataract extraction combined with anterior vitrectomy, complex traumatic cataract surgery, highly myopic crystalline lens implantation, and so on.