COL18A1 and isolated ectopia lentis: In our patient, Traboulsi syndrome was confirmed through exome and Sanger sequencing after excluded deleterious mutations related to ectopia lentis including ADAMTS10, ADAMTS17, ADAMTSL4, CBS, COL18A1, FBN1, LTBP2, PAX6, and VSX2 (Chandra & Charteris, 2014).