What is the function of the conjunctiva?

The function of the conjunctiva is primarily to cover and protect the eye surface, which is why the correct answer highlights this role. The conjunctiva is a thin, transparent membrane that lines the inside of the eyelids and covers the anterior part of the eye, except for the cornea. This structure helps maintain the health of the eye by providing a barrier against foreign substances, such as dust and debris, and also plays a role in lubricating the eye by producing mucus and tears, which is essential for comfort and visual clarity.

While other parts of the eye are responsible for focusing light onto the retina, regulating tear production, and processing visual signals, these functions are not associated with the conjunctiva. The conjunctiva’s protective role is integral to ensuring the eye remains free from infection and irritation, thereby contributing to overall ocular health.