Chapter 9 Prescription Interpretation (TECH) Sample Questions

1. Rx
Ratio-prednisolone 1% ophthalmic drops
Mitte: 5 ml
Sig. gtt ii os
On the label the instruction should be:
  1. A. Instill 2 drops on right eye
  2. B. Instill 2 drops on both eyes
  3. C. Instill as directed
  4. D. Instill 2 drops on the left eye
Answer
Ans: D
Tips: OS = left eye, OD = right eye, OU = both eye. AS = left ear , AD = right ear, AU = both ear.