改良液晶视力表初步应用  

Preliminary application of a modified LCD visual acuity chart

作　　者：王瑞卿[1] 胡娱新[1] 吴凡[1] 杨德峰[1] 刘姝[1] 吴荒[1] 

机构地区：[1]吉林大学第二医院,长春130041

出　　处：《中华眼视光学与视觉科学杂志》2016年第7期430-432,共3页Chinese Journal Of Optometry Ophthalmology And Visual Science

摘　　要：目的探讨一种改良液晶视力表实际应用的可行性。方法前瞻性对照研究。选取吉林大学第二医院眼科医护人员33例，男8例，女25例，年龄（27．4±8．5）岁，先使用灯箱视力表再使用改良液晶改装后的液晶视力表对其进行视力检测。由同一名检查者对受检者双眼进行测量。使用Wilcoxon符号秩和检验和Bland—Altman法评估2种测量方法的一致性。结果灯箱视力表和改良液晶视力表测量的视力值分别为4．2～5．2（4．9）和4．2—5．1（4．9），2种方法测量结果的差异无统计学意义（Z=-0．307，P〉0．05）。Bland—Ahman图显示2种测量方法具有较好的一致性，其95％一致性界限为-0．168～0．162。结论应用改良液晶视力表检查视力和灯箱视力表具有较高的一致性。对于特殊患者，改良液晶视力表或许更具优势。Objective To assess the feasibility of a modified LCD visual acuity chart for practical applications. Methods In this prospective controlled study, 33 members of the medical staff from the ophthalmology department in the Second Hospital of Jilin University, aged 27.4±8.5, 8 males and 25 females, were recruited to check their visual acuity by first using a light box visual acuity chart and then a modified LCD visual acuity chart. All measurements were performed by the same examiner. A Wilcoxon signed-rank test and Bland-Altman plot were used to evaluate the agreement between the two visual charts. Results Visual acuity measured by the light box visual acuity chart and the modified LCD visual acuity chart was 4.2-5.2（4.9） and 4.2-5.1（4.9）, respectively. No significant differences in any measurements were found between the two visual acuity charts （Z=-0.307, P〉0.05）. A Bland-Ahman plot showed good agreement between the two measurements; the 95% limits of agreement was -0.168-0.162. Conclusion There is high agreement between visual acuity measurements obtained with the two visual charts. This modified LCD visual acuity chart may have some advantages for certain special patients.

关 键 词：视力测定法 视觉 一致性 

分 类 号：R770.4[医药卫生—眼科]