1.   A corneal transplant is usually the only effective form of treatment.

2.   And yet advocacy often feels like the only effective thing I can do.

3.   Antibiotics are only effective if you finish the whole course of treatment.

4.   In the West the closed fist is considered almost the only effective weapon to be used in unarmed combat.

5.   Protests were made on their behalf but, as Henry Toch discovered, self-help was the only effective recourse.

6.   Rules are only effective if they are properly enforced.

7.   The only effective countermeasure to such activities is international inspection of all the nuclear facilities on Earth.

8.   The only effective means of controlling outbreaks of this disease are mass vaccination campaigns.

9.   The only effective remedy is to install hardened valve seats or a replacement cylinder head, both expensive options.

10.   Until new institutions could be put in place, this common confidence in de Gaulle was the only effective source of unity in the nation.