Question

28 fill in the blank 1 point 20/30 vision is choose your answer... than 20/20 vision previous 5

Explanation:

In vision testing, 20/20 is normal. 20/30 means at 20 feet, you see what a normal eye sees at 30 feet, so it's worse (poorer) than 20/20.

Answer:

worse (or "poorer" can also be used, but "worse" is more common here)