Ford's first Model T engine had four cylinders in a row. Some luxury cars of the 1920s had inline engines with as many as eight cylinders. Engines with as many as 12 or more cylinders in a row have been used, but mainly in large marine and stationary engines. Of course smooth running is only one goal.
In brief: Antibiotic eye drops. They start in hours but they may take 7-10 days to get rid of the bad bacteria. ...If you start antibiotics use them as directed, usually 7 days.. In brief: Antibiotic eye drops. They start in hours but they may take 7-10 days to get rid of the bad bacteria.
Bacterial Conjunctivitis. Antibiotics, usually given topically as eye drops or ointment, can help shorten the length of bacterial conjunctivitis, reduce complications, and reduce the spread of infection to others. If your doctor prescribes antibiotic eye drops or ointment, the infection should clear within several days. However, mild bacterial conjunctivitis may get better without antibiotic treatment and without any complications. It often improves in 2 to 5 days without treatment but can last up to 2 or 3 weeks.