Trichiasis refers to the condition where eyelashes grow inward towards the eyeball, and generally, there are two types. One type is caused by the inward turning of the eyelid, known as entropion. The treatment for this type of trichiasis involves correcting the entropion, which can be achieved through corrective surgery for entropion, thereby treating the trichiasis. The other type is simply the inward growth of the eyelashes themselves. This type of trichiasis can be treated with electrolysis, where an electric needle is used to destroy the hair follicles. Once the follicles are destroyed, the eyelashes will no longer regrow, effectively curing the condition.