Public condition directory
Browse public condition summaries from China medical resources by stable specialty category.
Conjunctival dermolipoma
Conjunctival dermolipoma is mostly congenital and is a solid cyst, usually unilateral. It is a relatively common congenital benign tumor that generally does not require treatment.
View detailsConjunctival papilloma
The conjunctiva is an important part of the eye, a membranous mucous tissue covering the eyeball and the inner surface of the eyelids. Conjunctival papilloma is an irregular growth formed by the proliferation of epidermal cells and blood vessels of the eyelid, induced by human papillomavirus. It often occurs at the limbus, lacrimal caruncle, and eyelid margin, presenting as a bright red, fleshy mass. According to the location of tumor growth, conjunctival papilloma can be divided into two types: Conjunctival papilloma: It resembles a cauliflower or mulberry, with a soft texture and red color, and rarely undergoes malignant transformation. Limbal papilloma: The tumor is tightly adhered to the underlying cornea and sclera, prone to recurrence after excision, and has a certain tendency for malignant transformation.
View detailsSubconjunctival hemorrhage
Subconjunctival hemorrhage refers to bleeding caused by the rupture of small blood vessels beneath the conjunctiva. The blood tends to accumulate in a sheet-like fashion within the subconjunctival tissue, forming bright red or dark red patches under the conjunctiva. It commonly occurs in one eye. It can affect individuals of any age, but is more prevalent in older adults. It is usually asymptomatic, though occasionally there may be a sensation of eye fullness or foreign body sensation.
Conjunctival hemangioma
Conjunctival hemangiomas are mostly congenital, appearing at birth or shortly thereafter. They are usually benign tumors and are divided into two types: Capillary hemangioma: More common in infants. Cavernous hemangioma.
View detailsLens disease
The lens is a transparent, disc-shaped object located inside the eyeball, and it is one of the main refractive media of the eye. Its primary function is to adjust its shape, which changes the refractive index of light, allowing for clear vision at different distances. With age, the elasticity of the lens gradually decreases, and its accommodative power weakens, leading to presbyopia. Additionally, the lens filters out some ultraviolet light, providing a protective effect on the retina. Common lens diseases include: Lens opacity: This refers to a change in the transparency of the lens, also known as cataracts. Lens subluxation and dislocation: Under normal circumstances, the lens is suspended by the suspensory ligaments from the ciliary body, with its axis almost coinciding with the visual axis. Due to congenital factors, trauma, or disease, damage or rupture of the suspensory ligaments can weaken the suspending force, leading to lens subluxation or partial dislocation. If the suspensory ligaments completely rupture, it can result in complete lens dislocation. The main symptom is decreased vision.
View detailsLens contusion
Lens contusion refers to the strong vibratory effect on the lens after the eyeball is impacted by external force, often causing loosening and detachment of the suspensory ligaments around the lens, leading to abnormal lens position, manifested as lens dislocation or subluxation. Contusion can also cause localized subepithelial opacity of the lens, and in severe cases, anterior capsule rupture can lead to cataract formation. It is common in people who enjoy sports, heavy manual laborers, and those involved in fights. Clinical manifestations include decreased vision, monocular diplopia, and eye pain.
View detailsCongenital lens anomalies
Congenital lens abnormalities include abnormalities in lens formation, morphology, transparency, and position. They can occur at different stages from the formation of the embryonic lens vesicle to birth. Common conditions include lens luxation and aphakia.
View detailsMacular and Retinal Pigment Epithelium Dystrophy
Macular and retinal pigment epithelial dystrophy is a rare genetic eye disease that can lead to vision loss. Common types include Stargardt disease and Best disease (also known as vitelliform dystrophy or vitelliform degeneration). Best disease: Typically develops between 3 and 15 years of age. Stargardt disease: Primarily affects adolescents and children of consanguineous marriages.
View detailsAcute retinal necrosis syndrome
Acute retinal necrosis syndrome is a group of rare, severe, vision-threatening eye diseases caused by herpesvirus infection. This disease can occur in people of any age, but is more common in young adults (average 33 years old) or older adults (average 45 years old). The main symptoms include red eyes, eye swelling, and acute vision loss.
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