NIDEK手持自动电脑验光仪在儿童屈光不正中的应用

Application of NIDEK hand-hold automated refractor for ametropia in children

目的:了解手持自动电脑验光仪的准确性及在儿童屈光不正中的应用价值。方法:对27例4～16岁儿童用10g/L阿托品眼膏3次/d,连续3d,睫状肌麻痹前后,分别进行视网膜检影、NIDEKAUTOREF/KERATOMEARK-30手持自动电脑验光仪验光和综合验光仪主观验光。结果:睫状肌麻痹后,手持自动电脑验光仪与视网膜检影结果间相关系数为0.980,差值均数±标准差为-0.37±0.52,95%可信区间为-0.51～-0.23;手持自动电脑验光仪与综合验光仪主观验光结果间相关系数为0.982,差值均数±标准差为-0.37±0.49,95%可信区间为-0.51～-0.24,以上两组配对t检验均P=0.000,均差异显著。表明在95%的测量中,结果差异均在0.50D以内。不同屈光状态下,在95%可信区间内,屈光度相差范围为远视<0.75D,近视<0.50D。结果均为手持自动电脑验光仪比视网膜检影、综合验光仪主观验光偏负值。睫状肌麻痹前由于调节的影响3种检查结果相差较大,远视结果相差比近视结果相差大。结论:睫状肌麻痹后,手持自动电脑验光仪验光和视网膜检影、综合验光仪主观验光有极高的一致性,在儿童屈光不正检查中是一种很有价值的、方便的、可靠的屈光检查工具。

AIM： To realize the accuracy of automated refractor （ NIDEK AUTO REF/KERATOME ARK-30 ） and its application value to the children suffered from ametropia. METHODS： Twenty-seven children aged from 4 to 16 were carried on a serious of examinations, which included retinoscopy, hand-hold automated refractor and phoropter subjective optometry, after treated with cycloplegia by 1% atropin eye cream three times per day for 3 days and before this treatment respectively. RESULTS： After cycloplegia, the correlation coefficient between the results of hand-hold automated refractor and retinoscopy was 0. 980, mean difference plus （minus） standard deviation was -0.37± 0.52, and 95% confidence interval was -0. 51- -0. 23. The correlation coefficient between hand-hold automated refractor and phoropter subjective optometry was 0. 982, mean difference plus（minus） standard deviation was -0.37 ± 0.49, and 95% confidence interval was -0.51- -0.24, and the examinations for above 2 sets were P = 0. 000. The results showed that all the difference are within 0.50D for 95% confidence interval. In different refractive states, the refraction differ scope was less than 0.75D for hypermetropia and less than 0.50D for myopia within 95% confidence interval. All the results indicated that compared with retinoscopy and phoropter subjective optometry, the automated refractor was apt to get a negative value. Before the cycloplegia , there is big difference among the three kinds of check results for modulation of lens, and the difference for hyperopia is bigger than myopia. CONCLUSION： After cycloplegia, NIDEK hand-hold automated refractor optometry results are consistent with retinoscopy optometry and phoropter subjective optometry, thus, it is a kind of valuable, convenient and reliable check tool for children refractive error.