World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
82
Citations
33592
World Ranking
15903
National Ranking
8003

Chris A. Johnson publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Chris A. Johnson sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 449 publications — 49th percentile

49% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Chris A. Johnson D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Chris A. Johnson sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 82 D-Index — 21st percentile

21% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

Chris A. Johnson is affiliated with the University of Iowa in the United States and has contributed extensively to the field of Medicine, with a focus on Ophthalmology. Their research covers subfields including Radiology, Nuclear Medicine and Imaging, Hematology, Astronomy and Astrophysics, as well as Atomic and Molecular Physics and Optics.

The scientist's main research topics include Glaucoma and retinal disorders, Retinal Diseases and Treatments, Retinal Imaging and Analysis, Stellar, planetary, and galactic studies, Adaptive optics and wavefront sensing, Astronomy and Astrophysical Research, and Ocular Surface and Contact Lens.

Frequent co-authors collaborating with Chris A. Johnson are:

  • Michael P. Fitzgerald
  • Kenneth Magnone
  • Siamak Yousefi
  • Michael V. Boland
  • Marc Kassis

Significant publication venues for Johnson include:

  • arXiv (Cornell University)
  • Translational Vision Science & Technology
  • Current Developments in Nutrition
  • Journal of Animal Science
  • Ophthalmology

Some of the recent papers authored or co-authored by Chris A. Johnson are:

  • Visual Field Changes Over 5 Years in Patients Treated With Panretinal Photocoagulation or Ranibizumab for Proliferative Diabetic Retinopathy, 2020, JAMA Ophthalmology
  • Assessment of Cumulative Incidence and Severity of Primary Open-Angle Glaucoma Among Participants in the Ocular Hypertension Treatment Study After 20 Years of Follow-up, 2021, JAMA Ophthalmology
  • Functional assessment of glaucoma: Uncovering progression, 2020, Survey of Ophthalmology
  • Machine-Identified Patterns of Visual Field Loss and an Association with Rapid Progression in the Ocular Hypertension Treatment Study, 2022, Ophthalmology
  • Predicting Visual Field Worsening with Longitudinal OCT Data Using a Gated Transformer Network, 2023, Ophthalmology

Best Publications

  • The Ocular Hypertension Treatment Study: A Randomized Trial Determines That Topical Ocular Hypotensive Medication Delays or Prevents the Onset of Primary Open-Angle Glaucoma

    Michael A. Kass;Dale K. Heuer;Eve J. Higginbotham;Chris A. Johnson

  • The Ocular Hypertension Treatment Study: baseline factors that predict the onset of primary open-angle glaucoma.

    Mae O. Gordon;Julia A. Beiser;James D. Brandt;Dale K. Heuer

  • Efficacy and safety of voretigene neparvovec (AAV2-hRPE65v2) in patients with RPE65-mediated inherited retinal dystrophy: a randomised, controlled, open-label, phase 3 trial

    Stephen Russell;Jean Bennett;Jennifer A. Wellman;Daniel C. Chung

  • A computerized method of visual acuity testing: Adaptation of the Early Treatment of Diabetic Retinopathy Study testing protocol

    Roy W Beck;Pamela S Moke;Andrew H Turpin;Frederick L Ferris

  • Screening for glaucomatous visual field loss with frequency-doubling perimetry.

    C A Johnson;S J Samuels

  • Incidence of Visual Field Loss in 20,000 Eyes and Its Relationship to Driving Performance

    Chris A. Johnson;John L. Keltner

  • Blue-on-Yellow Perimetry Can Predict the Development of Glaucomatous Visual Field Loss

    Chris A. Johnson;Anthony J. Adams;Evanne J. Casson;James D. Brandt

  • Influence of glaucomatous visual field loss on health-related quality of life

    P Gutierrez;M R Wilson;C Johnson;M Gordon

  • Progression of early glaucomatous visual field loss as detected by blue-on-yellow and standard white-on-white automated perimetry.

    Chris A. Johnson;Anthony J. Adams;Evanne J. Casson;James D. Brandt

  • Predicting binocular visual field sensitivity from monocular visual field results.

    Jacqueline M. Nelson-Quigg;Kimberly Cello;Chris A. Johnson

  • Frequency doubling technology perimetry for detection of glaucomatous visual field loss.

    Kimberly E Cello;Jacqueline M Nelson-Quigg;Chris A Johnson

  • Test-retest variability of frequency-doubling perimetry and conventional perimetry in glaucoma patients and normal subjects

    B C Chauhan;C A Johnson

  • Classification of Visual Field Abnormalities in the Ocular Hypertension Treatment Study

    John L. Keltner;Chris A. Johnson;Jacqueline M. Quigg;Kimberly E. Cello

  • Computerized method of visual acuity testing: Adaptation of the Amblyopia Treatment Study visual acuity testing protocol

    Pamela S. Moke;Andrew H. Turpin;Roy W. Beck;Jonathan M. Holmes

  • Baseline visual field characteristics in the ocular hypertension treatment study

    Chris A Johnson;John L Keltner;Kimberly E Cello;Mary Edwards

  • Confirmation of visual field abnormalities in the Ocular Hypertension Treatment Study. Ocular Hypertension Treatment Study Group.

    J L Keltner;C A Johnson;J M Quigg;K E Cello

  • Canadian Cardiovascular Society Guidelines for Evaluation and Management of Cardiovascular Complications of Cancer Therapy

    Sean A. Virani;Susan Dent;Christine Brezden-Masley;Brian Clarke

  • Baseline Visual Field Profile of Optic Neuritis: The Experience of the Optic Neuritis Treatment Trial

    John L. Keltner;Chris A. Johnson;John O. Spurr;Roy W. Beck

  • Further evaluation of docosahexaenoic acid in patients with retinitis pigmentosa receiving vitamin A treatment: subgroup analyses.

    Eliot L. Berson;Bernard Rosner;Michael A. Sandberg;Carol Weigel-DiFranco

  • Clinical Trial of Lutein in Patients with Retinitis Pigmentosa Receiving Vitamin A

    Eliot L Berson;Bernard Rosner;Michael A Sandberg;Carol Weigel-DiFranco

Frequent Co-Authors

Andrew Turpin
Andrew Turpin University of Melbourne
Allison M. McKendrick
Allison M. McKendrick University of Melbourne
Paul G. D. Spry
Paul G. D. Spry Iowa State University
Pamela A. Sample
Pamela A. Sample University of California, San Diego
Roy W. Beck
Roy W. Beck University of South Florida
Robert N. Weinreb
Robert N. Weinreb University of California, San Diego
Karla Zadnik
Karla Zadnik The Ohio State University
Donald C. Hood
Donald C. Hood Columbia University
Herschel W. Leibowitz
Herschel W. Leibowitz Pennsylvania State University
Linda M. Zangwill
Linda M. Zangwill University of California, San Diego

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