| Name | Info | Provider | Link |
|---|---|---|---|
| subscription/membership/fee required | Ingenta plc | https://www.ingentaconnect.com/openurl?genre=article&issn=&volume=48&issue=10&spage=433&aulast=Song | |
| Refractive Errors | free resource | MedlinePlus Health Information | https://medlineplus.gov/refractiveerrors.html |
| subscription/membership/fee required | Ovid Technologies, Inc. | http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=36155949.ui | |
| subscription/membership/fee required | Wolters Kluwer | https://doi.org/10.1097/ICL.0000000000000931 |