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The top 10 productive countries and their citation ratio in astigmatism vectorial research.
| Rank | Country | Number of citations | Number of publications | Citation ratio |
|---|---|---|---|---|
| 1 | United States | 5,773 | 212 | 27.2 |
| 2 | China | 2,124 | 170 | 12.5 |
| 3 | Spain | 2,792 | 111 | 25.2 |
| 4 | United Kingdom | 2,022 | 96 | 21.1 |
| 5 | Germany | 1,845 | 95 | 19.4 |
| 6 | Australia | 1,611 | 59 | 27.3 |
| 7 | Japan | 1,472 | 57 | 25.8 |
| 8 | Italy | 950 | 50 | 19.0 |
| 9 | South Korea | 867 | 50 | 17.3 |
| 10 | Austria | 516 | 38 | 13.6 |
