This does not answer your question but I was reminded of this situation that my mother dealt with. She kept getting eye infections and going through antibiotics, then the infection would return. After several rounds, her doctor discovered that her some of her eyelashes were turning inward instead of outward, causing the infections. Believe it or not, she had plastic surgery on her eyelids that turned the edge of her eyelids outward, changing the direction of those errant eyelids. She never had that problem again.