Top 10 Key Players companies in Keratometer by Most Literature Citation in the United States in 2021 – Discovery

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The Keratometer top 10 is Discovery PatSnap’ annual ranking of the top 10 Most Literature Citation Keratometer Key Players in the United States. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2021, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.

A keratometer, also known as an ophthalmometer, is a diagnostic instrument for measuring the curvature of the anterior surface of the cornea, particularly for assessing the extent and axis of astigmatism. It was invented by the German physiologist Hermann von Helmholtz in 1851, although an earlier model was developed in 1796 by Jesse Ramsden and Everard Home. A keratometer uses the relationship between object size (O), image size (I), the distance between the reflective surface and the object (d), and the radius of the reflective surface (R).

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1	Vision-Sciences, Inc.	New York, United States	Health care,Deep brain stimulator,Vagus nerve stimulation, ...[+2]	Literature citation: 476
2	Cleveland Clinic	OH, US	Health care,Face transplant,Coronary artery bypass surgery, ...[+2]	Literature citation: 191
3	U.S. Department of Veteran Affairs	District of Columbia, United States	Health care,National security,Health Insurance Portability and Accountability Act, ...[+2]	Literature citation: 135
4	Bascom Palmer Eye Institute	United States	Health care,Ophthalmology,Cornea, ...[+2]	Literature citation: 135
5	Jules Stein Eye Institute	California, United States	Social network,Health care,Ophthalmology, ...[+2]	Literature citation: 129
6	Manhattan Eye, Ear & Throat Hospital	New York, United States	Health care,Hospitality industry	Literature citation: 128
7	Kaiser Permanente International	California, United States	Managed Care Organization,Managed care	Literature citation: 124
8	Memorial Hospital & Health System	Indiana, United States	Health care,Hospitality industry,Childbirth, ...[+2]	Literature citation: 113
9	Madigan Army Medical Center	Washington, United States	Healthcare system,Health care	Literature citation: 69
10	Yahoo	Virginia, United States	Advertising,Search engine,Search engine optimization, ...[+2]	Literature citation: 54