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.
The eye drops are usually applied every 4 to 8 hours and the ointment is usually applied two to four times a day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Use tobramycin eye drops or ointment exactly as directed.