摘要
目的研究Welchallyn Suresight一代(SS1)和二代(SS2)对屈光不正进行测量的可重复性与一致性,评价SS1和SS2的临床应用价值。方法临床病例系列研究。对2013年10月至2014年3月在广州市妇女儿童医疗中心就诊的51例2~16岁(平均年龄10.26岁)屈光不正患者,排除其他眼疾。先在自然瞳孔状态下用SS1和SS2视力筛查仪,Topcon电脑验光仪进行检查,后用0.5%托吡卡胺滴眼液散瞳30—45 min,进行视网膜检影验光,记录屈光状态。可重复性研究采用个体分别测量,三次结果的组内相关系数(intraclass correlation coefficient,ICC)以及重复系数作为重复测量精确性的分析指标。SS1、SS2和Topcon电脑验光仪三组数据,和视网膜检影比较的95%一致性界限,作为一致性的指标。结果(1)在球镜(-5D至+5D)和柱镜度数测量方面,SS1、SS2和Topcon电脑验光仪三组与散瞳后检影结果的差值比较差异无统计学意义(P〉0.05),在球镜(-10D至+5D)和柱镜轴向测量方面,SS1、SS2和Topcon电脑验光仪三组与散瞳后检影结果的差值有统计学意义(P〈0.05)。(2)可重复性:SS1、SS2及Topcon电脑验光仪三者在球镜方面ICC均〉0.75,有很好的可重复性;柱镜度方面SS1的ICC为0.66,SS2和Topcon电脑验光仪ICC分别为0.88和0.99,SS2可重复性较SS1好;柱镜轴向方面SS1和SS2ICC分别为0.73和0.74,在除去柱镜度数小于0.5D的数据后SS1和SS2的测量可重复性有提高,分别为0.85和0.73。(3)95%一致性界限:SS1与视网膜检影法比较的95%一致性界限球镜(-5D至+5D)方面为(-3.09,1.94)D,柱镜方面为(-1.76,1.75)D,柱镜轴向(组内全部数据)方面为(-41.66,53.02)°,柱镜轴向(柱镜度数≥0.5D)方面为(-33.55,32.31)°;SS2与视网膜检影法比较的95%一致性界限球镜(-5D至+5D)方面为(-3.15,1.83)D,球镜(-10D至+5D)方面为(-2.96,2.23)D,柱镜方面为(-1.26,1.27)D,柱镜轴向(组内全部数据)方面为(-44.69,68.35)°,柱镜轴向(柱镜度数≥0.5D)方面为(-38.86,45.50)°;Topcon电脑验光仪与视网膜检影法比较的95%一致性界限球镜(-5D至+5D)方面为(-2.57,0.94)D,球镜(-10D至+5D)方面为(-3.10,1.25)D,柱镜方面为(-0.61,0.54)D,柱镜轴向(组内全部数据)方面为(-31.92,36.35)°,柱镜轴向(柱镜度数≥0.5D)方面为(-22.97,19.75)°。SS1和SS2的95%一致性界限均较Topcon电脑验光仪宽。结论自然瞳孔状态下SS1和SS2的屈光检查结果对于初步了解儿童屈光状态,发现可能导致弱视的严重屈光不正并指导下一步的临床处理有很大的意义。虽然在柱镜测量方面有一定的局限性,但这不影响它在群体性筛查中的应用。
Objective To evaluate the repeatability and agreement of Welch Allyn Suresight 1 (ss1), Suresight 2 (ss2) autorefractor in measurements of refractive error as compared to the Topcon autorefractor and retinoscopy. Methods Data from 51 (2- to 16-year-old) cases with no ocular ab- normalities were reported. First, the refractive error was determined in each eye by the Welch Allyn SureSight 1, Suresight 2 autorefractor and Topcon autorefractor with noncycloplegia. Second, streak retinoscopy, measurements were performed approximately 30-45 min after cycloplegia induced by 0.5% tropicamide ophthalmic solutions. The intraclass correlation coefficient (ICC) and the 95% lim- its of agreement for statistical analysis were used. Results There were no statistically significant dif- ference (P 〉0.05) in measurements of sphere (range: -5D to +5D) and cylinder among SS1, SS2 and Topcon autorefractor. There were statistically significant differences (P 〈0.05) in measurements of sphere (range: -10D to +5D) and cylinder axis among SS1, SS2 and Topcon autorefractor. Repeat- ability: The intraclass correlation coefficient (ICC) were 0.97 sphere (range: -5D to +5D), 0.66 cylin- der, 0.73 cylinder axis (full) and 0.85 cylinder axis (abs (cyl) ≥ 0.5) for the SS1 and 0.95 sphere (range: -5D to +5D), 0.97 sphere (range: -10D to +5D), 0.88 cylinder, 0.74 cylinder axis (full) and 0.73 cylinder axis (abs (cyl) ≥ 0.5) for the SS2 and 0.99 sphere (range: -5D to +5D), 0.99 sphere (range:-10D to +5D), 0.89 cylinder, 0.83 cylinder axis (full) and 0.92 cylinder axis (abs (cyl) ≥ 0.5) for the Topcon autorefractor. The ICC of the three devices showed high repeatability. 3. 95% limits of agreement: The 95% limits of agreement were (-3.09, 1.94) diopter (D) sphere (range:-5D to +5D), (-1.76,1.75)D cylinder, (-41.66,53.02) degree cylinder axis (full) and (-33.55,32.31) degree cylinder axis (abs (cyl) ≥ 0.5) for the SS1 and (-3.15, 1.83) D sphere (range:-5D to +5D),(-2.96, 2.23)D sphere(range:-10D to +5D) ,(-1.26,1.27)D cylinder, (-44.69,68.35) degree cylinder axis (full) and (-38.86,45.50) degree cylinder axis (abs(cyl) ≥0.5) for the SS2 and (-2.57,0.94)D sphere(range:-5D to +5D), (-3.10,1.25)D sphere (range:-10D to +5D), (-0.61,0.54)D cylinder, (-31.92, 36.35) degree cylinder axis (full) and (-22.97, 19.75) degree cylinder axis (abs (cyl)≥ 0.5) for the Topcon autorefractor. For both SS1 and SS2, the 95% limits of agreement were wider than Topcon autorefractor. Conclusions As a vision screening technique to let us have the preliminary understanding of refractive errors in children with noncycloplegia, SS1 and SS2 can help identify high refractive errors which may leads to amblyopia and have great significance on further clinical treatment. Although SS1 and SS2 performed worse than Topcon autorefractor in the measurements of cylinder, the Welch Allyn sureSight autorefractor is a suitable instrument to screen refractive error in preschool children.
出处
《中国实用眼科杂志》
2016年第3期210-215,共6页
Chinese Journal of Practical Ophthalmology
基金
广州市科技攻关项目(2012Y2-00017)