Question:

Which of the following statements is correct?

Cornea is convex, transparent layer which is highly vascularised

Cornea is an external, transparent and protective proteinaceous covering of the eye-ball

Cornea consists of dense matrix of collagen and is the most sensitive portion the eye

Cornea consists of dense connective tissue of elastin and can repair itself

Solution:

Correct option is D. Cornea consists of dense matrix of collagen and is the most sensitive portion the eye. Cornea consists of dense matrix of collagen, it is the transparent continuation of the sclera, that covers the iris and lens. It protects the eye ball from damage and prevents entry of micro-organisms into the eye. So, the correct answer is 'Cornea consists of dense matrix of collagen and is the most sensitive portion the eye'.