What term describes the structure at the end of Descemet's membrane?

What term describes the structure at the end of Descemet's membrane?

• A. Schwalbe line
• B. Scleral spur
• C. Schlemm's canal
• D. Macula

Answer: (A)

Schwalbe's line is the term for the peripheral end of Descemet's membrane. Descemet's membrane is the basement membrane secreted by the corneal endothelium, and it thickens with age. At the limbus, this membrane ends and a thin, visible line forms where the corneal endothelium transitions to the trabecular meshwork region. This distinguishing edge is what we call Schwalbe's line. The other structures—scleral spur, Schlemm's canal, and the macula—are located in different parts of the eye (angle landmarks, aqueous humor drainage pathway, and the retina, respectively) and do not describe the end of Descemet's membrane.

Schwalbe's line is the term for the peripheral end of Descemet's membrane. Descemet's membrane is the basement membrane secreted by the corneal endothelium, and it thickens with age. At the limbus, this membrane ends and a thin, visible line forms where the corneal endothelium transitions to the trabecular meshwork region. This distinguishing edge is what we call Schwalbe's line. The other structures—scleral spur, Schlemm's canal, and the macula—are located in different parts of the eye (angle landmarks, aqueous humor drainage pathway, and the retina, respectively) and do not describe the end of Descemet's membrane.