For trichiasis, it first depends on the nature of the ingrown eyelashes. If there are only a few, such as one or two, it is recommended to pluck them out. For some people, once these are plucked, the new eyelashes may grow back in the correct position, so no further treatment is necessary.

If the ingrown eyelashes recur repeatedly as individual lashes, electrolysis of the hair follicle can be performed to destroy the follicle, preventing the eyelashes from growing back. However, because this is a destructive procedure, many hospitals have discontinued it, though some still offer this treatment.

If there are many ingrown eyelashes, appearing in rows, the treatment depends on the position of the eyelid. Eyelash correction surgery may be necessary. Depending on the specific situation, excision of the tarsal plate to correct the trichiasis can be considered as well.