The knowledge of a great number of patients with trichiasis and the lack of existence of publication about this subject, has motivate the authors to elaborate this article. The authors intenal to show the causes the signs, symptoms and consequences of trichiasis in relation to the cornea and visual acuity, as well as the treatment using simple thecniques. By the results obtained during the 8 years of experience, it has been noticed the great value of the treatment on prevention õf loss of visual acuity caused by trichiasis.