Digital photogrammetric measurements were made based on the anthropometric landmarks Endocathion (EN), which corresponds to the medial palpebral commissure, and Exocathion (EX), which corresponds to the lateral palpebral commissure.22-24 The distance between the EN-right and EN-left points (EN-EN distance) was measured. The length of a paramedian vertical line, connecting the intersection of the lateral extension of the EN-EN line with the EX point to the intersection of the EN-EN line with the outer margin of the eyebrow, which was denominated EB (eyebrow) or distance EX-EB, was also measured.