CAJ | 학술논문

目的评估数字式Mars对比敏感度检查表的精确性和准确性,探索其能否应用于中国低视力患者的对比敏感度检查.方法前瞻性对照研究.正常视力者40例,双眼习惯矫正视力≥1.0,排除明显眼部疾病;低视力患者43例,双眼中好眼最佳矫正视力≤0.3.所有被检者在视力矫正的前提下采取单眼测试,检查程序如下:①由第一名检查者从3张数字式Mars对比敏感度检查表中采取抽签法随机抽取一张表格,对被检者进行测试,并记录结果.②由第一名检查者随机用数字式Mars对比敏感度检查表和字母式Mars对比敏感度检查表分别再次测试被检者,分别记录每次的测试结果.③第二名检查者用步骤1中使用的那张数字式Mars对比敏感度检查表对被检者进行测试并记录结果.重复性和再现性通过统计组内标准差(Sw)、精确度(1.96Sw)、组内变异系数(CVw)和组内相关系数(ICC)进行评估；一致性比较采用Pearson线性相关分析、ICC及Bland-Altman分析法综合分析.结果数字式Mars对比敏感度检查表的重复性参数和再现性参数1.96Sw、CVw较小,而ICC值较高,大于0.75.数字式Mars对比敏感度检查表和字母式Mars对比敏感度检查表之间的一致性示两者之间呈高度正相关(r=0.995,P＜0.01).ICC为0.997,Bland-Altman分析结果为95％LoA的范围非常窄,为(-0.053,0.092)logCS,表明2个表之间具有高度的一致性.结论数字式Mars对比敏感度检查表具有较高的准确性和精确性,能够应用于中国低视力患者的对比敏感度检查.
목적 평고수자식Mars대비민감도검사표적정학성화준학성,탐색기능부응용우중국저시력환자적대비민감도검사.방법 전첨성대조연구.정상시력자40례,쌍안습관교정시력≥1.0,배제명현안부질병;저시력환자43례,쌍안중호안최가교정시력≤0.3.소유피검자재시력교정적전제하채취단안측시,검사정서여하:①유제일명검사자종3장수자식Mars대비민감도검사표중채취추첨법수궤추취일장표격,대피검자진행측시,병기록결과.②유제일명검사자수궤용수자식Mars대비민감도검사표화자모식Mars대비민감도검사표분별재차측시피검자,분별기록매차적측시결과.③제이명검사자용보취1중사용적나장수자식Mars대비민감도검사표대피검자진행측시병기록결과.중복성화재현성통과통계조내표준차(Sw)、정학도(1.96Sw)、조내변이계수(CVw)화조내상관계수(ICC)진행평고；일치성비교채용Pearson선성상관분석、ICC급Bland-Altman분석법종합분석.결과 수자식Mars대비민감도검사표적중복성삼수화재현성삼수1.96Sw、CVw교소,이ICC치교고,대우0.75.수자식Mars대비민감도검사표화자모식Mars대비민감도검사표지간적일치성시량자지간정고도정상관(r=0.995,P＜0.01).ICC위0.997,Bland-Altman분석결과위95％LoA적범위비상착,위(-0.053,0.092)logCS,표명2개표지간구유고도적일치성.결론 수자식Mars대비민감도검사표구유교고적준학성화정학성,능구응용우중국저시력환자적대비민감도검사.
Objective To evaluate the reliability and validity of the Mars numeral contrast sensitivity test and to explore whether it can be used in the examination of contrast sensitivity in low vision patients.Methods This was a prospective comparative study.Eighty-three subjects (83 eyes)were divided into two groups:a normal vision group,40 young adults without significant eye diseases whose habitual vision was better than 0.8,and a low-vision group,43 low-vision patients whose better eye's visual acuity ranged from 0.05 to 0.3.Subjects were tested with their corrected visual acuity.①The first examiner randomly selected three Mars numeral contrast sensitivity charts and recorded the contrast sensitivity scores after testing.②Subjects were tested randomly by the first examiner with one of three forms of the Mars numeral contrast sensitivity charts and the Mars letter contrast sensitivity charts.The contrast sensitivity scores were recorded for each test.③The second examiner used the same procedure used by the first examiner to test subjects and record contrast sensitivity scores.Repeatability and reproducibility were assessed based on intersession within-subject standard deviations (Sw),precision (1.96Sw),coefficient of variation (CVw),and intraclass correlation coefficient (ICC).The agreement between the Mars numeral contrast sensitivity test and the Mars letter contrast sensitivity test was evaluated by Pearson correlation analysis,ICC and Bland-Altman analysis.Results Repeatability and reproducibility:the Mars numeral contrast sensitivity test showed excellent repeatability and reproducibility,with a lower 1.96Sw,CVw,and high ICC values (higher than 0.75).Agreement between the Mars numeral contrast sensitivity test and the Mars letter contrast sensitivity test:there was excellent agreement between the two tests based on a high correlation (r=0.995,P＜0.01),high ICC (0.997),and narrow 95％ LoA confidence intervals (-0.053,0.092)logCS.Conclusion The Mars Numeral Contrast Sensitivity Test can be used for low-vision testing based on its high reliability and validity.