Table 6.
The 30 most used keywords.
| Keyword | Frequency | Centrality | Degree | Total Link Strength |
|---|---|---|---|---|
| COVID-19 | 168 | 0.01 | 6 | 485 |
| Coronavirus | 85 | 0.03 | 11 | 352 |
| SARS-COV-2 | 74 | 0.05 | 9 | 309 |
| Ophthalmology | 45 | 0.03 | 6 | 155 |
| Conjunctivitis | 36 | 0.01 | 6 | 154 |
| Telemedicine | 24 | 0.02 | 12 | 77 |
| Infection | 23 | 0.06 | 8 | 96 |
| Transmission | 20 | 0.02 | 9 | 117 |
| SARS | 19 | 0.03 | 7 | 105 |
| Pandemic | 19 | 0.00 | 2 | 52 |
| Coronavirus disease 2019 | 18 | 0.00 | 3 | 71 |
| Outbreak | 15 | 0.01 | 6 | 83 |
| Eye | 15 | 0.00 | 1 | 66 |
| Pneumonia | 14 | 0.03 | 11 | 99 |
| ACE 2 | 14 | 0.08 | 17 | 88 |
| Ocular surface | 14 | 0.05 | 9 | 70 |
| Respiratory syndrome coronavirus | 12 | 0.00 | 4 | 62 |
| Chloroquine | 11 | 0.00 | 9 | 51 |
| Diagnosis | 11 | 0.04 | 11 | 74 |
| Hydroxychloroquine | 10 | 0.02 | 11 | 55 |
| Teleophthalmology | 10 | 0.07 | 11 | 43 |
| Conjunctiva | 9 | 0.01 | 9 | 60 |
| Retinopathy | 9 | 0.02 | 9 | 35 |
| Receptor | 9 | 0.00 | 4 | 56 |
| Lockdown | 9 | 0.00 | 1 | 23 |
| Ocular manifestation | 9 | 0.00 | 3 | 31 |
| Disease | 9 | 0.00 | 3 | 33 |
| Guidelines | 9 | 0.00 | 1 | 26 |
| Inhibition | 8 | 0.06 | 12 | 29 |
| Retina | 8 | 0.03 | 7 | 34 |