Polymyxin b sulfate and trimethoprim ophthalmic solution is used for

Conjunctivitis.

Explanation:

Conjunctivitis may be defined as the eye infection also known as pink eye infection. This is the mainly the inflammation of the conjunctiva layer of the eye and caused by the bacterial infection.

Polymyxin b sulfate and trimethoprim drug solution taken together to treat the conjunctivitis. Trimethoprim acts as bacteriostatic and inhibits the bacterial growth. Polymyxin B works as the bacteriocidal that result in the killing of the bacteria.

Thus, the answer is conjunctivitis.

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