|Blame It on microbes. If they live on the eyelid than you'll have some problems. The microbes emit their toxins - it causes a burning sensation in your eyes. And some people due to certain microbes jumps halyazion. Halyazion also called barley. |
These microbes sometimes cause skin dryness, when their rapidly multiply.
On astigmatism, cause of dryness and burning of eye could be also vascular eye.
Some laboratories do not provide a list of what makes seeding.