ABSTRACT

Discussion:

The cylindrical power and cylindrical axis measured by the three devices were found to be consistent within the two groups, while spherical power and spherical equivalents were inconsistent in both groups. Accommodation is a factor markedly affecting the spherical refractive measurements in school-age children and young adults. Therefore, accommodation can be responsible for inter-device differences.

Results:

The mean age was 9.95±3.14 years in Group 1 (n=21) and 23.46±5.36 in Group 2 (n=24). While the differences in spherical power and spherical equivalent measured by the three devices were found statistically significant in both groups (p<0.05), there was no significant difference in cylindrical power measurements (p=0.641, p=0.431, respectively). In both groups, no statistically significant difference between the devices was observed in the measurements of Jackson cross cylinder power at 0° and 45° axis (p>0.05). Interpupillary distance measurements obtained by Potec PRK-6000 and Plusoptix S08 showed statistically significant difference in Group 1, whereas the difference was not significant in Group 2.

Material and Method:

Ninety eyes of 45 patients who did not have ocular pathology apart from refractive error were enrolled in the study. Refractive errors were measured by Potec PRK-6000 autorefractometer, Nidek ARK-30 hand-held autorefractometer and Plusoptix S08 photorefractometer, respectively. The subjects were separated into two groups: Group 1 (school-age, pediatric) and Group 2 (adult). The measurements of spherical and cylindrical power, cylindrical axis, spherical equivalent and interpupillary distance obtained by the three devices in both groups were statistically compared.

Purpose

To compare the refractive errors measured with Plusoptix S08 photorefractometer, Nidek ARK-30 hand-held autorefractometer and Potec PRK-6000 autorefractometer in school-age children and adult population.