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Top 50 Key Players companies in Keratometer
by Most Literature Citation in the world in 2018

The Keratometer top 50 is Discovery PatSnap’ annual ranking of the top 50 Most Literature Citation Keratometer Key Players in the world. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2018, 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).

Key Players

Fast-growings

New Entrants

Ranking Year:

2022

2021

2020

2019

2018

Region:

Global

United States

United Kingdom

Ranking:

Most Patent Filings

Highest Patent Value

Most Patent Citation

Most Research Publications

Most Literature Citation

Most Market Reports

Most News Heat

#
Company Name
Region
Tech Topics
Total
1
Vision-Sciences, Inc.
New York, United States
Health care,Deep brain stimulator,Vagus nerve stimulation,
...[+2]
Literature citation: 476
2
Moorfields Eye Hospital NHS Foundation Trust
United Kingdom
Health care,Retinitis,Optical coherence tomography,
...[+2]
Literature citation: 203
3
Cleveland Clinic
OH, US
Health care,Face transplant,Coronary artery bypass surgery,
...[+2]
Literature citation: 191
4
University Health Network
Ontario, Canada
Health care,Hospitality industry,Resident physician,
...[+2]
Literature citation: 186
5
St James's University Hospital
West Yorkshire, United Kingdom
Medicine,Surgery,Internal medicine,
...[+2]
Literature citation: 137
6
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
7
Bascom Palmer Eye Institute
United States
Health care,Ophthalmology,Cornea,
...[+2]
Literature citation: 135
8
Jules Stein Eye Institute
California, United States
Social network,Health care,Ophthalmology,
...[+2]
Literature citation: 129
9
Manhattan Eye, Ear & Throat Hospital
New York, United States
Health care,Hospitality industry
Literature citation: 128
10
Kaiser Permanente International
California, United States
Managed Care Organization,Managed care
Literature citation: 124
11
Training Vision Institute Pte Ltd.
Central Region, Singapore
Digital marketing
Literature citation: 118
12
Memorial Hospital & Health System
Indiana, United States
Health care,Hospitality industry,Childbirth,
...[+2]
Literature citation: 113
13
Taipei Medical University Hospital
Taiwan Province, China
Patiromer,Biophysics,Medicine,
...[+2]
Literature citation: 112
14
Toronto Western Hospital
Ontario, Canada
Emergency department,Neurosurgery,Hospitality industry,
...[+1]
Literature citation: 92
15
Tan Tock Seng Hospital Pte Ltd.
Central Region, Singapore
Health care,Health department,Emergency department,
...[+2]
Literature citation: 73
16
Madigan Army Medical Center
Washington, United States
Healthcare system,Health care
Literature citation: 69
17
L.V. Prasad Eye Institute
Andhra Pradesh, India
Blindness,Wellness Programs,Health care,
...[+2]
Literature citation: 62
18
Yahoo
Virginia, United States
Advertising,Search engine,Search engine optimization,
...[+2]
Literature citation: 54
19
Helse Bergen HF Haukeland Universitetssjukehus
Hordaland, Norway
Regional hospital,Oncology,Breast cancer,
...[+2]
Literature citation: 52
20
University College London Hospitals NHS Foundation Trust
United Kingdom
Neurosurgery,Neurology,Health care
Literature citation: 44
21
Samsung Medical Center
South Korea
Medical research,Hospitality industry,Health care,
...[+2]
Literature citation: 39
22
Yerkes National Primate Research Center
Georgia, United States
Primate,Health care,Biology,
...[+2]
Literature citation: 36
23
Allergan SpA
Italy
Drug
Literature citation: 36
24
New Delhi Centre For Sight Ltd.
Delhi, India
Health care,Pharmacy and Therapeutics,Sight,
...[+2]
Literature citation: 35
25
The Brigham & Women's Hospital, Inc.
Massachusetts, United States
Health care,Mitral valve surgery,Health equity,
...[+2]
Literature citation: 35
26
Sheba Medical Center
Tel Aviv, Israel
Health care,Intubation,Tracheal tube,
...[+2]
Literature citation: 30
27
Asan Medical Center
South Korea
Health care,Hospitality industry,Antigen-presenting cell,
...[+2]
Literature citation: 29
28
Guangdong General Hospital
Guangdong Sheng, China
Cell therapy,Genetic engineering,Messenger RNA,
...[+2]
Literature citation: 29
29
AmeriCorps VISTA
National service,Biology,Medicine,
...[+2]
Literature citation: 29
30
National Institute for Health Research
United Kingdom
Clinical trial,Research system,Biology,
...[+2]
Literature citation: 26
31
Sankara Nethralaya
Tamil Nadu, India
Vascular surgery,General surgery,Plastic surgery
Literature citation: 26
32
University Health System
Texas, United States
Serial killer,Health care,Public health
Literature citation: 25
33
Cleveland Clinic Lerner Research Institute
Ohio, United States
Genomic medicine,Molecular medicine,Molecular genetics,
...[+2]
Literature citation: 23
34
The Mount Sinai Hospital
New York, United States
Borough,Health care,Hospitality industry,
...[+2]
Literature citation: 22
35
Royal North Shore Hospital
Health care,Hospitality industry,Referral,
...[+2]
Literature citation: 14
36
Mackay Memorial Hospital
Taiwan Province, China
Dendritic cell,Cell sorting,Biochip,
...[+2]
Literature citation: 13
37
Singleton Hospital
United Kingdom
Health care,Hospitality industry
Literature citation: 11
38
Royal United Hospital Bath NHS Trust
Bath and North East Somerset, United Kingdom
Health care,Hospitality industry,City centre,
...[+1]
Literature citation: 10
39
Århus Universitetshospital
Denmark
Medical treatment,Hospitality industry,Health care,
...[+2]
Literature citation: 10
40
Leids Universitair Medisch Centrum
Zuid-Holland, Netherlands
Medical research,Hospitality industry,Health care,
...[+2]
Literature citation: 9
41
University Malaya Medical Centre
Malaysia
Medical institution,Medicine,Internal medicine,
...[+2]
Literature citation: 9
42
The Pennine Acute Hospitals NHS Trust
Manchester, United Kingdom
Health care,Hospitality industry,Medicine,
...[+2]
Literature citation: 8
43
Seoul National University Hospital
South Korea
Emergency department,Healthcare system,Medical tourism,
...[+2]
Literature citation: 7
44
Aalborg University Hospital
Denmark
Social science,Public university,Neurotechnology,
...[+2]
Literature citation: 7
45
Canterbury Hospital
Australia
Local government area,Repatriation
Literature citation: 7
46
Kyung Hee University System
South Korea
Hangul,University system,Paralegal,
...[+2]
Literature citation: 6
47
CARE Hospitals Pvt Ltd.
Andhra Pradesh, India
Health care,Vascular surgery,Anesthesiology,
...[+2]
Literature citation: 5
48
Helsinki University Central Hospital
Finland
Medicine,Internal medicine,Surgery,
...[+2]
Literature citation: 2
49
Rigshospitalet
Hovedstaden, Denmark
Health care,Hospitality industry,Umbilical Cord Blood Stem Cell,
...[+2]
Literature citation: 1
50
Nassau University Medical Center
New York, United States
Trauma center,Medicine,Surgery,
...[+2]
Literature citation: 1

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