2 year impact factor1.1
Ophthalmology 73 out of 99
Total citations made in the JCR year to content published in a journal in the prior two years are divided by the number of articles and reviews published by the journal in the prior two years.
5 year impact factor1.5
Ophthalmology 65 out of 99
Total citations made in the JCR year to content published in a journal in the prior five years are divided by the number of articles and reviews published by the journal in the prior five years.
Journal Citation Indicator0.48
Ophthalmology 68 out of 99 | Psychology 70 out of 93 | Psychology,Experimental 87 out of 102
The Journal Citation Indicator (JCI) is a measure of citation impact that is normalized by subject category. It is calculated using citations from items published in the JCI year and prior three years, to items published in the prior three years. Because of the category normalization, a score of 1 means that articles in a journal received a number of citations equal to the average citation count in that subject category.