Public condition directory
Browse public condition summaries from China medical resources by stable specialty category.
Retinal degeneration
Retinal degeneration is a group of hereditary diseases caused by congenital dystrophy of cone and rod cells. This is a chronic, progressive eye disease, usually affecting both eyes, with very few cases being unilateral. It is characterized by night blindness, constricted visual fields, bone-corpuscle-like pigmentation in the fundus, and photoreceptor dysfunction.
View detailsRetinal artery occlusion
Retinal artery occlusion refers to the blockage of arterial blood flow to the retina, causing acute retinal ischemia, which can lead to sudden vision loss or blindness. It is one of the urgent causes of blindness, commonly seen in the elderly, mostly in people aged 60-70, and usually affects one eye at onset.
View detailsBranch retinal artery occlusion
Branch retinal artery occlusion (BRAO) is a type of retinal artery occlusion caused by small blood clots entering the eye through the bloodstream and occluding the small branch arteries of the retina. It is more common in older adults. The main symptoms are sudden vision loss or decreased vision. Some patients experience transient vision loss as a premonitory symptom before the onset of the disease.
Retinal vasculitis
Retinal vasculitis is an intraocular inflammation of the blood vessels, characterized by visible vascular inflammation or angiographic evidence of vascular leakage and vessel wall staining. Typical symptoms include blurred vision, floaters, decreased visual acuity, visual field defects or scotomas, and metamorphopsia.
View detailsCommotio retinae and retinal contusion
Retinal concussion and contusion refer to a condition characterized by retinal edema and decreased vision that occurs shortly after an eye contusion. The shockwave transmitted from the impact site damages the outer retina, the pigment epithelium is damaged, its barrier function is disrupted, and extracellular edema occurs, leading to retinal opacity and a decrease in vision, potentially to 0.1.
View detailsCentral retinal artery occlusion
Central retinal artery occlusion (CRAO) is an acute ophthalmic condition characterized by partial or complete blockage of the central retinal artery, leading to sudden blindness or severe vision loss. It typically affects one eye and is more common in patients with atherosclerosis, hypertension, and diabetes. The incidence is higher in the elderly and less common in young people. Sudden blindness, dilated pupils, and retinal edema with cloudiness are the main symptoms of this condition.
View detailsCongenital anomalies of the uvea
The eyeball wall is divided into many layers, and the uvea is located in the middle layer of the eyeball wall, between the white part of the eye (sclera) and the inner layer of the eyeball wall. The uvea has three important components: the iris, the ciliary body, and the choroid. Congenital anomalies of the uvea are mostly related to incomplete closure of the embryonic fissure during the early development of the embryonic eye. Common congenital anomalies of the uvea include: congenital aniridia, iris coloboma, persistent pupillary membrane, and choroidal coloboma.
View detailsAnterior uveitis
The uvea is located between the sclera and the retina of the eyeball, mainly including the iris, ciliary body, and choroid. Because it contains pigments and has color, it resembles a purple grape, hence the name uvea. Uveitis is an inflammation of the intraocular uvea caused by various factors such as infection, immunity, or injury. Anterior uveitis is the most common type of uveitis, including three types: iritis, iridocyclitis, and anterior cyclitis. It is often associated with rheumatic diseases, including rheumatoid arthritis and ankylosing spondylitis. The main symptoms include eye pain, photophobia, tearing, and decreased vision.
View detailsPanuveitis
Panuveitis refers to inflammation affecting the entire uvea, often accompanied by inflammation of the retina and vitreous. (The uvea is the middle layer of the eyeball wall, located between the sclera and the retina, and mainly includes the iris, ciliary body, and choroid.) This disease is common in young and middle-aged adults. The main symptoms include red eyes, pain, photophobia, tearing, floaters, flashes of light, decreased vision, and distorted vision.
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