Fundus disease

The cornea, iris, and lens in front of the eyeball are defined by the ophthalmology community as the anterior segment of the eye, and the posterior vitreous, retina, and choroid are defined as the posterior segment of the eye. The bottom of the posterior segment is called the fundus. The fundus is composed of the retina, fundus blood vessels, optic nerve papilla, optic nerve fibers, macular on the retina, and choroid behind the retina. The lesions in these parts are collectively called fundus disease. Fundus disease is mainly harmful to people's visual ability, and can cause blindness. Fundus disease is a disease with a wide variety of diseases, complex etiology, and varying conditions. Early symptoms of fundus disease around the fundus are often undetected by the patient. When the patient feels that the vision has dropped, the course may already be severe. For the central part of the fundus, such as the macular area and the optic nerve, once the lesion occurs, it can affect vision. Fundus disease, like other diseases of the human body, is also acute or chronic. The development of some diseases can take several years or even ten years, and for some acute diseases, blindness can occur if they are not rescued. Such as: blocked central retinal artery. There are still some symptoms of the fundus that can heal without treatment, but they may recur. Such as: central serous choroidal retinopathy. There are many diseases in the fundus that are related to systemic diseases, such as diabetes, kidney disease, hypertension, bacterial diseases, parasites, and craniocerebral diseases.