Which membrane is the posterior limiting membrane?

Which membrane is the posterior limiting membrane?

• A. Descemet's membrane
• B. Bowman's membrane
• C. Corneal epithelium
• D. Substantia propria

Answer: (A)

Descemet's membrane is the posterior limiting membrane of the cornea. It forms the boundary between the stroma (substantia propria) and the endothelial layer, and it serves as the basement membrane for the corneal endothelium. In contrast, Bowman's membrane is the anterior limiting membrane between the epithelium and the stroma, while the corneal epithelium sits on the anterior surface and the stroma makes up the thick central layer. So the posterior boundary of the cornea is provided by Descemet's membrane.

Descemet's membrane is the posterior limiting membrane of the cornea. It forms the boundary between the stroma (substantia propria) and the endothelial layer, and it serves as the basement membrane for the corneal endothelium. In contrast, Bowman's membrane is the anterior limiting membrane between the epithelium and the stroma, while the corneal epithelium sits on the anterior surface and the stroma makes up the thick central layer. So the posterior boundary of the cornea is provided by Descemet's membrane.