What is the common name for conjunctivitis, a bacterial infection of the eyes?

Conjunctivitis, commonly known as pinkeye, is an inflammation of the conjunctiva, which is the membrane that lines the eyelid and covers the front of the eye. This condition can be caused by various factors, including bacterial infections, allergens, or irritants. The term "pinkeye" specifically refers to the redness and swelling of the eyes often associated with the inflammation from these infections.

In contrast, a stye refers to an infection of the oil glands in the eyelids, often resulting in a painful, swollen lump. Blepharitis is inflammation of the eyelids, usually involving the base where the eyelashes grow, but it is not limited to the conjunctiva. Corneal opacity pertains to a condition affecting the cornea's clarity, which is distinct from conjunctivitis as it does not involve inflammation of the conjunctiva itself. Thus, the answer 'pinkeye' accurately describes the commonly recognized term for conjunctivitis due to its association with the symptoms and characteristics of the condition.