Table 5. Top twenty countries for publications related to eye diseases (2010–2014).

(A) Based on the total number of publications, (B) Based on the 5-Y IF population index (cumulative 5-Y IF per million inhabitants), (C) Based on the 5-Y IF GDP index (cumulative 5-Y IF per 1 billion US dollars of GDP)

A				B		C
Country	No. of articles (%)	Cumulative 5-Y IF (sum of 5-Y IF)	m5-Y IF (mean 5-Y IF)	Country	5-Y IF population index	Country	5-Y IF GDP Index
United States	15,266 (25.85)	53328.643	3.49	Iceland	567.11	Iceland	12.65
China	4,967 (8.41)	11319.11	2.28	Singapore	376.18	Malawi	11.43
United Kingdom	4,141 (7.01)	14502.337	3.50	Switzerland	246.27	Guatemala	10.90
Japan	4,029 (6.82)	9644.649	2.39	United Kingdom	228.55	Singapore	7.20
Germany	3,247 (5.5)	7569.76	2.33	Australia	228.41	Israel	6.16
India	2,288 (3.87)	4259.227	1.86	Denmark	205.73	United Kingdom	5.64
Italy	2,200 (3.73)	6055.104	2.75	Israel	204.07	Greece	4.46
Korea. Rep.	2,137 (3.62)	5082.929	2.38	Netherlands	192.01	New Zealand	4.35
France	2,045 (3.46)	4896.101	2.39	United States	170.53	Korea. Rep.	4.21
Spain	1,820 (3.08)	4115.654	2.26	New Zealand	163.37	Tunisia	4.16
Turkey	1,682 (2.85)	2573.658	1.53	Austria	140.55	Nepal	3.96
Australia	1,669 (2.83)	5152.254	3.09	Finland	130.29	Netherlands	3.77
Canada	1,377 (2.33)	4413.118	3.20	Sweden	128.62	Australia	3.66
Brazil	1,005 (1.7)	1690.9	1.68	Canada	127.68	Denmark	3.48
Netherlands	861 (1.46)	3209.807	3.73	Greece	108.60	United States	3.36
Switzerland	757 (1.28)	1958.809	2.59	Korea. Rep.	101.96	Turkey	3.30
Iran. Islamic Rep.	644 (1.09)	1213.767	1.88	Italy	101.75	Switzerland	2.98
Poland	627 (1.06)	658.179	1.05	Norway	98.12	Spain	2.90
Israel	589 (1)	1599.869	2.72	Germany	93.27	Hungary	2.89
Singapore	550 (0.93)	1972.32	3.59	Spain	88.16	Serbia	2.89

Note:

GDP, gross domestic product; 5-Y IF, five-year impact factor; m5-Y IF, mean five-year impact factor.