Haab's striae
Haab's striae (pronounced: hahbz stree-ay) are horizontal, parallel lines or breaks in the Descemet's membrane of the cornea, typically associated with congenital glaucoma.
Etymology
The term is named after the Swiss ophthalmologist, Otto Haab, who first described these striae in the late 19th century.
Description
Haab's striae are distinct from Vogt's striae, which are vertical or oblique lines also found in the Descemet's membrane, but are associated with keratoconus. Haab's striae are typically wider and more irregular than Vogt's striae. They are often associated with a history of elevated intraocular pressure (IOP) during infancy, which causes the Descemet's membrane to rupture and subsequently heal with scarring.
Clinical significance
Haab's striae are a significant clinical finding in the diagnosis of congenital glaucoma. They are often visible on slit lamp examination of the eye. The presence of Haab's striae, especially in combination with other signs such as buphthalmos (enlargement of the eye) and epiphora (excessive tearing), strongly suggests a diagnosis of congenital glaucoma.
Related terms
- Descemet's membrane
- Congenital glaucoma
- Vogt's striae
- Keratoconus
- Intraocular pressure
- Slit lamp examination
- Buphthalmos
- Epiphora
External links
- Medical encyclopedia article on Haab's striae
- Wikipedia's article - Haab's striae
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