Hyperacute bacterial conjunctivitis, caused by gonococci or meningococci, is characterized by a short incubation period of 10 hours to two to three days, with rapid disease progression. Acute or subacute bacterial conjunctivitis, also known as acute catarrhal conjunctivitis, commonly known as pink eye, has a sudden onset with an incubation period of one to three days, affecting both eyes either simultaneously or one to two days apart.