Public condition directory
Browse public condition summaries from China medical resources by stable specialty category.
Bacterial conjunctivitis
Bacterial conjunctivitis is a common infectious eye disease characterized by purulent inflammation of the conjunctiva caused by bacterial infection. It can affect people of all ages, but is more common in children. Symptoms primarily include red eyes, increased discharge, foreign body sensation, photophobia, tearing, and eyelid edema.
View detailsOptic nerve avulsion
Optic nerve avulsion is the result of various causes leading to strong, acute traction on the optic nerve, causing the intraocular segment of the optic nerve, along with the scleral lamina cribrosa, to detach from the scleral canal. Clinically, it is classified into partial avulsion and complete avulsion based on the degree of injury. Typically, immediate blindness occurs after avulsion. In cases of partial avulsion, some vision may be retained.
View detailsRetinal 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.
Retinal 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.
View detailsRetinal 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.
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