What is the name of the membrane that lines the eyelids and covers the eyeball?

• A. Cornea
• B. Sclera
• C. Conjunctiva
• D. Iris

Answer: (C)

The correct choice is 'Conjunctiva' because this membrane plays a crucial role in protecting and lubricating the eye. The conjunctiva is a thin, transparent membrane that covers the inner surface of the eyelids and extends over the white part of the eyeball (the sclera). It helps to keep the surface of the eye moist, which is essential for overall eye health and comfort. Additionally, the conjunctiva contains mucous glands that contribute to tear production, further aiding in lubrication.

Other terms in the choices refer to different parts of the eye. The cornea is the clear, dome-shaped surface that covers the front of the eye and plays a key role in focusing vision. The sclera is the white outer covering of the eyeball that provides structural support and protection. The iris is the colored part of the eye that regulates the size of the pupil and the amount of light that enters the eye. Understanding these distinctions is vital for clarity in medical terminology related to ophthalmology.