The graph shows the changes in the impact factor of BMJ Open Ophthalmology and its the corresponding percentile for the sake of comparison with the entire literature. Impact Factor is the most common scientometric index, which is defined by the number of citations of papers in two preceding years divided by the number of papers published in those years.
How Influential is BMJ Open Ophthalmology?
BMJ Open Ophthalmology is the 22nd out of 143 Ophthalmology journals. This means the journal is among the top 16% in the discipline of Ophthalmology. This Journal is the 1985th out of 14,350 Health Sciences journals. This means the journal is among the top 14% in the science branch of Health Sciences.
How are inpact factors calculated?
The impact factor (IF) is calculated by counting citations from peer-reviewed journals only.
extended IF also counts citations from books and conference papers. However, no patent, abstract, working papers, online documents, etc., are covered.
