Autoacuity Test与标准对数视力表用于儿童视力测定的比较

Comparison of Autoacuity Test and Standard Logarithmic Visual Acuity Chart for Assessment of Visual Acuity of Children

【目的】比较一种计算机视力测试软件Autoacuity Test和标准对数视力表之间的一致性和重复性,初步探讨Autoacuity Test临床应用的可行性。【方法】对41名视功能正常儿童[(8.4±1.8)岁]和25名弱视儿童[(8.0±2.2)岁]分别使用标准对数视力表和Autoacuity Test两种方法进行视力测试。30min后重新对其进行测试。以Autoacuity Test与标准对数视力表检查结果的一致性限度的评价其准确性,以测试-再测试的重复系数及配对t检验评价其重复性。【结果】视功能正常儿童的Autoacuity Test与标准对数视力间的一致性限度为0.16对数单位;弱视儿童为0.31对数单位。正常儿童两种方法各自的测试-再测试结果间差异均无统计学意义(P>0.05)。弱视儿童标准对数视力表测试-再测试结果间差异无统计学意义,Autoacuity再次测试视力检查结果较初次测试有所提高(P<0.05)。【结论】Autoacuity Test与标准对数视力表两种检查方法在视功能正常儿童中一致性较好,在弱视儿童中一致性稍差,两者重复性相近。Autoacuity是一种可取的儿童视力测试方法。

[Objective] To validate the performance of the Autoacuity Test against the standard logarithmic visual acuity chart. [Methods] Forty-one visually normal children [（8.4 ± 1.8） years] and 25 children with amblyopia [ （8.0 ± 2.2） years] were tested with both the standard logarithmic visual acuity chart and Autoacuity Test. A retest was administered 30 min later. Limits of agreements, coefficient of repeatability （COR） and paired t-test were calculated in order to evaluate the validity and repeatability of the Autoacuity. [ Results ] The limit of agreement for the Autoacuity against the logarithmic chart was 0.16 log units for children of normal visual function, and was 0.31 for children with amblyopia. Test-retest results for the logarithmic chart did not differ significantly for either group （P 〉 0.05）. However, a significant better retest result （P 〈 0.05） was detected for Autoacuity Test for children with amblyopia. [Conclusion] The Autoacuity Test was equally repeatable and moderately comparable with the standard logarithmic visual acuity chart. The Autoacuity Test was an acceptable visual acuity test for children.