手持式波前自动验光仪的设计与临床评估
Design and Clinical Evaluation of a Handheld Wavefront Autorefractor.
作者信息
Durr Nicholas J, Dave Shivang R, Vera-Diaz Fuensanta A, Lim Daryl, Dorronsoro Carlos, Marcos Susana, Thorn Frank, Lage Eduardo
机构信息
*PhD †OD, PhD Madrid-MIT M+Visión Consortium, Massachusetts Institute of Technology, Cambridge, Massachusetts (NJD, SRD, DL, EL); Department of Biomedical Engineering, Johns Hopkins University, Baltimore, Maryland (NJD); New England College of Optometry, Boston, Massachusetts (FAV-D, FT); Instituto de Óptica "Daza de Valdés," Consejo Superior de Investigaciones Científicas, Madrid, Spain (CD, SM); and Instituto de Investigaciones Biomédicas "Alberto Sols," UAM/CSIC, Madrid, Spain (EL).
出版信息
Optom Vis Sci. 2015 Dec;92(12):1140-7. doi: 10.1097/OPX.0000000000000732.
PURPOSE
To introduce a novel autorefractor design that is intended to be manufacturable at low cost and evaluate its performance in measuring refractive errors.
METHODS
We developed a handheld, open-view autorefractor (the "QuickSee" [QS]) that uses a simplified approach to wavefront sensing that forgoes moving parts and expensive components. Adult subjects (n = 41) were recruited to undergo noncycloplegic refraction with three methods: (1) a QS prototype, (2) a Grand Seiko WR-5100K (GS) autorefractor, and (3) subjective refraction (SR). Agreements between the QS and GS were evaluated using a Bland-Altman analysis. The accuracy of both autorefractors was evaluated using SR as the clinical gold standard.
RESULTS
The spherical equivalent powers measured from both autorefractors correlate well with SR, with identical correlation coefficients of r = 0.97. Both autorefractors also agree well with each other, with a spherical equivalent power 95% confidence interval of ±0.84 diopters (D). The difference between the accuracy of each objective device is not statistically significant for any component of the power vector (p = 0.55, 0.41, and 0.18, for M, J0, and J45, respectively). The spherical and cylindrical powers measured by the GS agree within 0.25 D of the SR in 49 and 82% of the eyes, respectively, whereas the spherical and cylindrical powers measured by the QS agree within 0.25 D of the SR in 74 and 87% of the eyes, respectively.
CONCLUSIONS
The prototype autorefractor exhibits equivalent performance to the GS autorefractor in matching power vectors measured by SR.
目的
介绍一种旨在以低成本制造的新型自动验光仪设计，并评估其在测量屈光不正方面的性能。
方法
我们开发了一种手持式、开放式视野自动验光仪（“QuickSee”[QS]），它采用了一种简化的波前传感方法，无需移动部件和昂贵组件。招募了成年受试者（n = 41），用三种方法进行非散瞳验光：（1）QS原型，（2）精工WR - 5100K（GS）自动验光仪，（3）主观验光（SR）。使用Bland - Altman分析评估QS和GS之间的一致性。以SR作为临床金标准评估两种自动验光仪的准确性。
结果
两种自动验光仪测得的等效球镜度与SR相关性良好，相关系数均为r = 0.97。两种自动验光仪之间也具有良好的一致性，等效球镜度的95%置信区间为±0.84屈光度（D）。对于屈光力矢量的任何分量，各客观设备准确性之间的差异均无统计学意义（对于M、J0和J45，p分别为0.55、0.41和0.18）。GS测得的球镜度和柱镜度分别在49%和82%的眼睛中与SR相差在0.25 D以内，而QS测得的球镜度和柱镜度分别在74%和87%的眼睛中与SR相差在0.25 D以内。
结论
在匹配SR测量的屈光力矢量方面，原型自动验光仪表现出与GS自动验光仪相当的性能。
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