“…The measurement of the palpebral fi ssure has been thoroughly studied by different authors. Various studies that measured the palpebral fi ssure of newborns, covering gestational ages from 29 to 43 weeks (20,21,(23)(24)(25)(26) and fetuses from 15.5 to 41 weeks of gestation (27) were published by authors from the United States (23,26) , Hungary (20) , China (24) , Bulgaria (25) , Nigeria (19,21) , and France (27) . One North American study constructed a curve of the palpebral fi ssure measurement of children from 29 weeks of gestation to 14 years of age (26) .…”