Public condition directory
Browse public condition summaries from China medical resources by stable specialty category.
Traumatic cataract
Traumatic cataract refers to lens opacity caused by blunt ocular trauma, penetrating injury, blast injury, electrocution, or chemical injury. The main symptom is decreased vision, which often appears immediately or shortly after the injury. In severe cases, it can lead to blindness.
View detailsBlepharitis
The eyelid margin is commonly known as the edge of the upper and lower eyelids. Blepharitis is an inflammation of the eyelid margin surface and the base of the eyelashes (including hair follicles and surrounding glandular tissues) caused by bacterial infection, predominantly chronic inflammation. It is a common ocular surface skin disease. It can be divided into the following three types: Squamous blepharitis: A chronic inflammation caused by seborrhea of the eyelid margin. Ulcerative blepharitis: Essentially a purulent inflammation of the eyelash follicles. Angular blepharitis: Inflammation located at the outer canthus (outer corner of the eye). The main symptoms include itchy and stinging eyes, hyperemia and swelling of the eyelid margin skin, misdirected, falling out, or ingrown eyelashes. The symptoms vary among different types of blepharitis.
View detailsRetinal branch vein occlusion
Retinal branch vein occlusion is a condition caused by a thrombus blocking the retinal branch vein system. This disease is more common in older adults and usually affects one eye. Symptoms include decreased vision and intraocular hemorrhage.
View detailsAlbinism
Albinism is a genetic disorder caused by a defect or significant reduction in melanin synthesis, characterized by a lack of pigment in the skin, hair, and eyes. Patients exhibit symptoms of albinism when genes involved in melanin production mutate. Due to varying inheritance patterns and mechanisms of action among these genes, albinism can be categorized into three main types: oculocutaneous albinism, ocular albinism, and albinism-related genetic syndromes.
View detailsViral keratitis
Viral keratitis is an inflammation of the cornea caused by viral infection. This disease is characterized by recurrent episodes, progressive vision loss, and resistance to drug treatment. It is primarily transmitted through close contact and can lead to blindness in severe cases.
View detailsMicrocornea
Microcornea is a congenital developmental anomaly characterized by a corneal diameter of less than 10 mm. It can affect one or both eyes and shows no gender predilection. It is often associated with other ocular conditions such as microphthalmia, iris coloboma, uveal coloboma, and congenital cataracts, which can lead to severe vision impairment. If not accompanied by other abnormalities, visual acuity is generally good.
View detailsColor blindness
Color blindness, also known as color vision deficiency or Daltonism, refers to the difficulty in distinguishing red, green, blue, or mixtures of these colors. Complete loss of color vision is very rare. Color blindness can be classified into congenital color blindness and acquired color blindness based on its etiology. Congenital color blindness is related to genetic factors, usually presenting as color vision deficiency from birth, without other obvious ophthalmic or systemic diseases. Acquired color blindness is generally caused by certain eye diseases, possibly due to damage to the optic nerve or retina caused by certain medications or lesions. In addition to color vision deficiency, it is often accompanied by decreased visual acuity.
View detailsGlobe rupture
Globe rupture refers to an injury where the intraocular pressure rapidly increases due to external force, leading to a rupture in a weak area of the eyeball wall. Patients may experience limited eye movement and decreased vision.
View detailsRetinitis pigmentosa
Retinitis pigmentosa (RP) is a genetic disorder and the most common inherited retinal degenerative disease. It is characterized by progressive blindness due to abnormalities in the photoreceptor cells (rods and cones) or the retinal pigment epithelium. The disease typically begins in childhood or adolescence, worsens during puberty, and affects the macula in middle and old age, leading to blindness.
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