Comparison of Optical Biometers OA-2000 and ALADDIN

DOI Web Site 3 References Open Access

Bibliographic Information

Other Title
  • 光学式眼軸長測定装置OA-2000とALADDINの比較

Search this article

Description

<p>[Purpose] To compare axial length (AL) measurement acquisition rate and measurement accuracy between optical biometers OA-2000 using fourier-domain (FD) and ALADDIN using time-domain (TD) in patients with cataract.</p><p>[Subjects and methods] Subjects were 51 eyes of 34 patients (mean age: 71.9 ± 9.6 years) measured by the two optical biometers before cataract surgery. Measurement by both devices was performed on the same day by the same examiner. AL, AL measurement acquisition rate according to the classified cataract grade, and the coefficient of variance (CV) obtained by both devices were compared.</p><p>[Results] The grades for the nuclear sclerosis based on the Emery-Little classification were as follows: grade 1 (9.8%), grade 2 (68.6 %), and grade 3 (21.6 %). The mean axial length measurements were 23.33 ± 1.11 mm by FD and 23.35 ± 1.12 mm by TD showing no significant difference between the two devices (P = 0.732). However, the AL measurement acquisition rate for TD was significantly lower than the rate for FD (P < 0.01, Chi-Square test) in patients with grade 2 nuclear sclerosis. FD showed a significantly smaller mean CV (0.0003 ± 0.0002) than TD (0.0022 ± 0.0013), indicating a higher stability in the measurements by FD (P < 0.01, paired t-test).</p><p>[Conclusions] Optical biometer with FD showed a higher AL measurement acquisition rate and better measurement accuracy than that with TD.</p>

Journal

References(3)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top