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- Title
Axial Length Measurement Using Partial Coherence Interferometry in Myopic Children: Repeatability of the Measurement and Comparison with Refractive Components.
- Authors
Shuhei Kimura; Satoshi Hasebe; Manabu Miyata; Ichiro Hamasaki; Hiroshi Ohtsuki
- Abstract
Abstract Purpose To evaluate the test–retest repeatability of axial length (AL) measurements made with the IOLMaster in children with a wide range of myopic refractive errors, and to clarify the relationship between the AL and other refractive components. Methods The subjects were 95 children (mean age SD, 10.8 1.3 years; range, 7–13 years; mean refractive error; −4.37 1.43 D; range, −1.50 to −8.19 D) who participated in a myopia-control trial. The AL of the right eye was measured three times using an IOLMaster, and the mean value was regarded as the representative measurement. After 5 min, the measurement was performed again, and the repeatability was evaluated by analyzing the distribution of differences between the two measurements. The relationships between the AL and age, cycloplegic autorefraction (RE), and corneal radius of curvature (CR) were also examined. Results The repeatability of the IOLMaster measurements was 0.05 mm (corresponding to a refractive error of 0.12 D) and was not affected by age or RE. AL was negatively correlated with RE (RE = −0.68 AL + 12.74,r= −0.37) and positively correlated with CR (CR = 0.21 AL + 2.53,r= 0.69). The highest correlation was found between the ratio of AL to CR and RE (AL/CR = −0.04 RE + 3.08,r= −0.76). No association was observed between age and AL, nor between CR and RE. Conclusions The IOLMaster provides high repeatability in AL measurement in myopic children. The associations between AL and each refractive component found in this study were consistent with those in previous studies that used the ultrasound A-mode method, except for slightly higher AL/CR ratios in our study.Jpn J Ophthalmol2007;51:105–110 Japanese Ophthalmological Society 2007
- Subjects
MYOPIA; REFRACTIVE errors; CORNEA; OPHTHALMOLOGY; VISUAL accommodation
- Publication
Japanese Journal of Ophthalmology, 2007, Vol 51, Issue 2, p105
- ISSN
0021-5155
- Publication type
Article
- DOI
10.1007/s10384-006-0410-5