Abstract：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-Altman 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.
王瑞卿,胡娱新,吴凡,杨德峰,刘姝,吴荒. 改良液晶视力表初步应用[J]. 中华眼视光学与视觉科学杂志, 2016, 18(7): 430-432.
Wang Ruiqing， Hu Yuxin， Wu Fan， Yang Defeng， Liu Shu， Wu Huang. Preliminary application of a modified LCD visual acuity chart. Chinese Journal of Optometry Ophthalmology and Visual science, 2016, 18(7): 430-432. DOI: 10.3760/cma.j.issn.1674-845X.2016.07.010
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