How long will it take for garamycin (gentamicin) ophtmalic drops to clear up an eye infection?

A week or less: Garamycin (gentamicin) is not used much by ophthalmologists any longer for "pinkeye", or conjunctivitis. Nevertheless, it is a reasonable choice for straightforward bacterial conjunctivitis. If the signs of infection, i.e. Redness, tearing, discharge, matted eyelid, etc. Are not resolved within a week the affected person should see an ophthalmologist as a stronger medication may be required.