Do you mean that it involves usual activities such as running or other sports? Trichiasis primarily results from the poor positioning of eyelashes, which touch the cornea, mainly damaging the corneal epithelium. Treatment can be based on the extent of trichiasis. If there are many inverted eyelashes, a correction surgery for trichiasis can be performed. If there are fewer, plucking them is possible, and corneal nutrients can be administered, such as Hailu eye drops and the antibiotic eye drops ofloxacin. It does not affect normal activities and sports in general. I am not sure if this answers your question; this is a general description of the condition of trichiasis.