Trichomegaly, also known as long eyelashes, is related to familial isolated trichomegaly and hypertrichosis. An important gene associated with Trichomegaly is FGF5 (Fibroblast Growth Factor 5), and among its related pathways/superpathways are Regulation of actin cytoskeleton and Transcription Ligand-dependent activation of the ESR1/SP pathway. Affiliated tissues include retina and lung, and related phenotypes are cataract and long eyelashes