Here is an overview of what you need to know about dry eye
If you have dry eye syndrome, the issue may be a lack of the right kind of tears to keep the eyes comfortable. This can occur if too few tears are being generated to keep the eye wet, or tears that do not stay on the eyes long enough. If not addressed, this dryness can cause harm to the surface of the eyeball. Possible causes include a side effect of a medication, an underlying issue, too much time spent on a device, or contact lenses.