White-to-white corneal diameter, pupil diameter, central corneal thickness and thinnest corneal thickness values of emmetropic subjects.
OBJECTIVE
This report assesses white-to-white corneal diameter, pupil diameter, central corneal thickness and thinnest corneal thickness values in a large sample of emmetropic subjects.


METHODS
Three hundred and seventy-nine eyes of 379 young healthy emmetropic subjects were analyzed by means of scanning-slit corneal topography. The age of the subjects ranged from 18 to 53 years (mean ± SD = 29 ± 7). The mean of five consecutive measurements of the central corneal thickness, the thinnest corneal thickness, the white-to-white corneal diameter, and the photopic pupil diameter was recorded.


RESULTS
The central corneal thickness ranged from 528 to 588 μm; the thinnest corneal thickness ranged from 504 to 574 μm; the white-to-white corneal diameter ranged from 11.5 to 12.3 mm; and the pupil diameter ranged from 3.0 to 4.7 mm. The central and the thinnest corneal thickness were positively correlated (r = 0.94, p < 0.001), and the pupil diameter was significantly higher in females (p < 0.001).


CONCLUSIONS
This study shows that there are no differences in white-to-white corneal diameter, central corneal thickness, and thinnest corneal thickness between emmetropic females and males. However, pupil diameters are greater in emmetropic females.
Department of Anatomy and Human Embryology, Faculty of Medicine, University of Valencia, Av. Blasco Ibáñez, 15, Valencia, 46010, Spain. juan.sanchis@uv.es
Juan A
JA
Sanchis-Gimeno
Daniel
D
Sanchez-Zuriaga
Francisco
F
Martinez-Soriano
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D015331:Cohort Studies; D003315:Cornea / Q000033:anatomy & histology*; D019781:Corneal Topography / Q000379:methods*; D058453:Emmetropia / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011680:Pupil; D012016:Reference Values; D012680:Sensitivity and Specificity; D012737:Sex Factors; D055815:Young Adult