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When a patient is instructed to receive eye drops bid, how many applications should they perform?

  1. Four

  2. Two

  3. Three

  4. One

The correct answer is: Two

When a patient is instructed to receive eye drops bid, it means they should administer the drops twice a day. "Bid" is an abbreviation derived from the Latin phrase "bis in die," which translates to "twice a day." Therefore, the correct understanding of this instruction is to perform a total of two applications each day. This dosing schedule is commonly used for medications that need to be delivered consistently throughout the day to maintain therapeutic levels in the eye.