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The number of ophthalmic publications indexed in PubMed from 1981 to 2010 in some developed countries
| Country | 1981–1990 | 1991–2000 | 2001–2010 | Total | |
|---|---|---|---|---|---|
| 1 | USA | 52 | 11439 | 22545 | 34036 |
| 2 | Japan | 732 | 4874 | 5947 | 11553 |
| 3 | UK | 359 | 2545 | 5126 | 8030 |
| 4 | China | 76 | 812 | 4569 | 5457 |
| 5 | Germany | 95 | 1452 | 2899 | 4351 |
| 6 | Canada | 159 | 829 | 1214 | 2202 |
| 7 | Sweden | 174 | 714 | 704 | 1592 |
| 8 | Switzerland | 60 | 404 | 785 | 1249 |
| 9 | Spain | 31 | 280 | 556 | 867 |
| 10 | France | 35 | 249 | 544 | 828 |
