Correlations between central corneal power, axial length, anterior chamber depth and central corneal thickness of near-emmetropic young university students in Palestine

Background: Researchers have found that the refractive states of the eye are influenced by a variety of variables. Aim: This study investigated the correlation between the central corneal power (CCP) and a number of variables, which include axial length (AL), anterior chamber depth (ACD) and the central corneal thickness (CCT) in near-emmetropic eyes of students. Setting: The study was conducted in the Optometry Laboratory of the Islamic University-Gaza (IUG), Palestine. Methods: In a prospective analysis, 200 near-emmetropic students were examined from February 2019 to May 2019 with an ultrasound scanner (A-scan), ultrasonic pachymeter and Visionix L79 automated refractometer Keratometer (ARK). Only the data of one eye were randomly chosen for investigation. Results: The means and standard deviations (s.d.) of the CCP, AL, ACD and CCT for male students (n = 97) were 43.19 dioptre (D) +/- 1.34 D, 23.54 mm +/- 0.68 mm, 3.59 mm +/- 0.26 mm and 549 mu m +/- 33 mu m, respectively. Furthermore, the means +/- s.d. of 103 female students were as follows: CCP 43.85 D +/- 1.43 D, AL 22.94 mm +/- 0.69 mm, ACD 3.35 mm +/- 0.25 mm and CCT 543 mu m +/- 35 mu m. There was a significant association between CCP and gender (p = 0.00). There was a negative significant correlation between CCP and AL for both the male (r = -0.64; p = 0.00) and the female (r = -0.71, p = 0.00) participants. Conclusion: This study provided information on CCP, AL, ACD and CCT in near-emmetropic eyes of adults. In male students, CCP was flatter and AL was longer when compared with female Palestinian students.