limbal stem cell deficiency
Pronunciation: LIM-bal STEM CELL deh-FISH-en-see
Condition where corneal stem cells located at the limbus are depleted, causing conjunctival overgrowth.
Full Definition
Limbal stem cell deficiency (LSCD) is a sight-threatening condition characterized by the depletion or dysfunction of corneal epithelial stem cells located at the corneoscleral junction (limbus). These stem cells are crucial for maintaining and regenerating the corneal epithelium throughout life. When damaged by chemical burns, severe infections, autoimmune diseases, or congenital disorders, the corneal surface becomes covered by conjunctival tissue, leading to chronic inflammation, persistent epithelial defects, and vision loss. The condition is diagnosed through clinical examination showing loss of the normal limbal architecture, conjunctival overgrowth onto the cornea, and chronic epithelial breakdown. Treatment options include medical management of inflammation and surgical interventions such as limbal stem cell transplantation or cultivated epithelial transplantation.
Usage
Usage note: Commonly abbreviated as LSCD; specify partial vs. total when documenting severity.
In Context
- "Chemical burns resulted in total limbal stem cell deficiency requiring transplantation." — Emergency treatment protocol
- "The patient's limbal stem cell deficiency was managed with amniotic membrane therapy." — Conservative treatment approach