McGinnigle Samantha, Naroo Shehzad A, Eperjesi Frank
Ophthalmic Research Group, School of Life and Health Sciences, Aston University, Birmingham, United Kingdom.
Clin Exp Optom. 2014 Mar;97(2):160-3. doi: 10.1111/cxo.12109. Epub 2013 Sep 11.
The aim was to evaluate the validity and repeatability of the auto-refraction function of the Nidek OPD-Scan III (Nidek Technologies, Gamagori, Japan) compared with non-cycloplegic subjective refraction. The Nidek OPD-Scan III is a new aberrometer/corneal topographer workstation based on the skiascopy principle. It combines a wavefront aberrometer, topographer, autorefractor, auto keratometer and pupillometer/pupillographer.
Objective refraction results obtained using the Nidek OPD-Scan III were compared with non-cycloplegic subjective refraction for 108 eyes of 54 participants (29 female) with a mean age of 23.7 ± 9.5 years. Intra-session and inter-session variability were assessed on 14 subjects (28 eyes).
The Nidek OPD-Scan III gave slightly more negative readings than results obtained by subjective refraction (Nidek mean difference -0.19 ± 0.36 DS, p < 0.01 for sphere; -0.19 ± 0.35 DS, p < 0.01 for mean spherical equivalent; -0.002 ± 0.23 DC, p = 0.91 for cylinder; -0.06 ± 0.38 DC, p = 0.30 for J0 and -0.36 ± 0.31 DC for J45, p = 0.29). Auto-refractor results for 74 per cent of spherical readings and 60 per cent of cylindrical powers were within ± 0.25 of subjective refraction. There was high intra-session and inter-session repeatability for all parameters; 90 per cent of inter-session repeatability results were within 0.25 D.
The Nidek OPD-Scan III gives valid and repeatable measures of objective refraction when compared with non-cycloplegic subjective refraction.
本研究旨在评估日本滨松市尼德克公司生产的OPD-Scan III型综合验光仪（Nidek OPD-Scan III）自动验光功能与非散瞳主观验光相比的有效性和可重复性。Nidek OPD-Scan III是一款基于检影原理的新型像差仪/角膜地形图仪工作站。它结合了波前像差仪、地形图仪、自动验光仪、自动角膜曲率计和瞳孔计/瞳孔测量仪。
对54名参与者（29名女性）的108只眼睛进行研究，这些参与者的平均年龄为23.7±9.5岁，将使用Nidek OPD-Scan III获得的客观验光结果与非散瞳主观验光结果进行比较。对14名受试者（28只眼睛）评估了测量期间内和测量期间间的变异性。
Nidek OPD-Scan III得出的读数比主观验光结果略负（球镜度数：尼德克平均差值-0.19±0.36DS，p<0.01；等效球镜度数：-0.19±0.35DS，p<0.01；柱镜度数：-0.002±0.23DC，p = 0.91；J0：-0.06±0.38DC，p = 0.30；J45：-0.36±0.31DC，p = 0.29）。74%的球镜读数和60%的柱镜度数的自动验光结果在主观验光结果的±0.25范围内。所有参数在测量期间内和测量期间间均具有高度可重复性；90%的测量期间间可重复性结果在0.25D以内。
与非散瞳主观验光相比，Nidek OPD-Scan III在客观验光方面给出了有效且可重复的测量结果。
