Yes, Lash Mites are REAL! 
Lash mites are tiny, microscopic bugs that can infect your eyelashes and cause redness, itching and excessive tear production. If you're experiencing these symptoms, it's important to know how they got there and what you can do about it.
Lash mites are actually pretty common—they live on your eyelashes, but they don't cause any problems until the conditions are right for them to multiply. The most common way that lash mites get into your eyes is by sharing mascara with someone else who has them (or even just getting close enough to touch their lashes). But if you have allergies or other things going on with your eyes, they can also sneak in through your tears.
Once they're there, the problem is usually no big deal: your body will usually kill off the mites within a week or two without any treatment at all. However, there are some steps you can take if you want to speed up the process:
Keep an eye out for symptoms like redness, itchiness or excessive tearing (but remember that these aren't always signs of lash mites). If you notice any of these things happening regularly—especially if accompanied by itching—you should see a doctor as soon as possible so she can diagnose whether it's lash mites or NOT.