What is a staphyloma of the sclera?
What is a staphyloma of the sclera?
A staphyloma is a localized defect in the eye wall with protrusion of uveal tissue due to alterations in scleral thickness and structure. [ from HPO]
What is staphyloma of the eye?
A staphyloma is a circumscribed outpouching of the wall of the globe. Posterior staphyloma is considered a hallmark of pathologic myopia and are among one of the major causes of developing maculopathy. However, it can be present in non-myopic eyes, often acquired secondarily due to infection or trauma.
What does Equatorial staphyloma mean?
n. A staphyloma occurring in the area of exit of the vortex veins of the eyeball.
How do you get a staphyloma?
Causes of Staphyloma
- Severe & progressive myopia.
- Trauma.
- Necrotizing infection.
- Scleritis.
- Glaucoma.
- Inflammation.
- Surgical weakening of the sclera.
- Radiotherapy.
Can scleritis cause staphyloma?
A rare form of necrotizing anterior scleritis without pain can be called scleromalacia perforans. The sclera is notably white, avascular and thin. Both choroidal exposure and staphyloma formation may occur. Posterior scleritis, although rare, can manifest as serous retinal detachment, choroidal folds, or both.
Does staphyloma cause blindness?
Macular degeneration can result in legal blindness among those with progressive myopia and posterior staphyloma.
What is bilateral staphyloma?
Peripapillary staphyloma is a rare non‐hereditary congenital anomaly characterised by a relatively normal appearing optic nerve head located at the base of a staphylomatous excavation. 1,2,3. It is generally not associated with other congenital defects or systemic diseases.
What is the most common cause of posterior staphyloma?
Posterior staphyloma is a condition that can be present in highly myopic individuals with long axial lengths. It is caused by elongation of the globe due to thinning and bulging of the sclera and results in an irregular configuration of the retina at the posterior pole.
How common is posterior staphyloma?
Posterior staphyloma was identified in 10.9% of the 395 highly myopic eyes. The prevalence of posterior staphyloma in highly myopic eyes also increased with advancing age (2.7% in subjects aged 35–50 years, 9.2% in those aged 50–59 years, 21.2% in those aged 60–69 years, and 43.6% in those aged 70–79 years).
What is meant by posterior staphyloma?
What is scleral staphyloma?
1. bulging of the cornea with adherent uveal tissue. 2. one formed by protrusion of the iris through a corneal wound. posterior staphyloma ( staphyloma posti´cum) backward bulging of sclera at the posterior pole of the eye. scleral staphyloma protrusion of the contents of the eyeball where the sclera has become thinned.
What does staphyloma mean in medical terms?
/staph·y·lo·ma/ (staf″ĭ-lo´mah) protrusion of the sclera or cornea, usually lined with uveal tissue, due to inflammation.staphylom´atous. anterior staphyloma staphyloma in the anterior part of the eye.
What does staphyloma look like?
In staphyloma the wall of the globe (cornea or sclera) are ectatic/thin and bulging with uveal tissue in it giving it a pigmented color. Staphylus (Greek) means cluster of grapes and staphyloma gets its name from this.
What is posterior staphyloma?
A staphyloma is a circumscribed outpouching of the wall of the globe. Posterior staphyloma is considered a hallmark of pathologic myopia and are among one of the major causes of developing maculopathy. However, it can be present in non-myopic eyes, often acquired secondarily due to infection or trauma.