###Rationale: Ans. is 'c' i.e., Descemet's membrane Histology of cornea The cornea has five distinct layers (from superficial to deep) : ? Epithelium : - It is the outermost pa of cornea and is composed of stratified squamous non-keratinized epithelial cells. Bowman's membrane : - It is not a true membrane but simply a condensed superficial pa of stroma. destroyed, it does not regenerate. Stroma (Substantia propria) : - This layer constitutes most of the cornea (90% of thickness). It consists of collagen fibrils (lamellae) embedded in hydrated matrix ofproteoglycans. Descemet's membrane : - This layer bounds the stroma posteriorly. In the periphery it appears to end at the anterior limit of trabecular meshwork as Schwahle's ring. Endothelium : - It is a single layer of flat polygnonal cells. The endothelial cells contain 'active-pump' mechanism and is the most impoant layer in maintaining the transparency of cornea.

###Answer: OPTION C IS CORRECT.
###Question: Schwable's ring is seen in which layer of cornea
###Options:
A. Bowmann's membrane
B. Stroma
C. Descemet's membrane
D. Substantia propria
