Purpose

Contact lens dry eye questionnaire-8 (CLDEQ-8) quantifies the disturbing symptoms with the aim of assessing the satisfaction and overall opinion of contact lens wearers. The aim of this study was to develop Turkish version and to evaluate the validity and reliability of the questionnaire.

Methods

CLDEQ-8 was translated into Turkish language, using the back translation methods. In a sample of 10 individuals, validation of translation was checked as pre-test evaluation. Turkish version of CLDEQ-8 questionnaire was conducted in 100 soft contact lens wearers. Validity was investigated using Rasch analysis and reliability by Cronbach’s alpha (α) and person separation index (PSI).

Results

The participants were healthy other than refractive errors. Their mean age was 25.19 ± 7.03 years and male to female ratio was 14/86. All of them were silicone-hydrogel soft contact lens wearers. Their contact lens history was 3.13 ± 3.77 years and mean refraction error was -2.69 ± 1.64 diopters.

The whole 8 items were consistent with the Rasch model (p > 0.05) and unidimensional (paired t test, p = 0.1). Both Cronbach’s alpha and PSI values were higher than 0.7 (α = 0.873, PSI = 0.867). There were not functional differences in questionnaire items regarding overall age groups (Andersen LR test, p = 0.518).

Conclusion

Turkish version of the CLDEQ-8 conforms to the Rasch model and provides the one dimensional assumption. The questionnaire has internal consistency, is valid and reliable in Turkish contact lens wearers.

中文翻译：

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土耳其版隐形眼镜干眼问卷 8 (CLDEQ-8) 的验证和可靠性。

目的

隐形眼镜干眼问卷 8 (CLDEQ-8) 量化了令人不安的症状，目的是评估隐形眼镜佩戴者的满意度和总体意见。本研究的目的是开发土耳其语版本并评估问卷的有效性和可靠性。

方法

CLDEQ-8 被翻译成土耳其语，使用回译方法。在 10 个人的样本中，翻译验证被检查作为预测试评估。土耳其语版 CLDEQ-8 问卷在 100 名软性隐形眼镜佩戴者中进行。使用 Rasch 分析和 Cronbach α (α) 和人员分离指数 (PSI) 的可靠性来研究有效性。

结果

除屈光不正外，参与者身体健康。他们的平均年龄为 25.19 ± 7.03 岁，男女比例为 14/86。他们都是硅水凝胶软性隐形眼镜佩戴者。他们的隐形眼镜历史为 3.13 ± 3.77 年，平均屈光度误差为 -2.69 ± 1.64 屈光度。

全部 8 个项目与 Rasch 模型（p > 0.05）和一维（配对 t 检验，p = 0.1）一致。Cronbach's alpha 和 PSI 值均高于 0.7（α = 0.873，PSI = 0.867）。在关于整个年龄组的问卷项目中没有功能差异（Andersen LR 检验，p = 0.518）。

结论

CLDEQ-8 的土耳其语版本符合 Rasch 模型并提供一维假设。该问卷具有内部一致性，在土耳其隐形眼镜佩戴者中有效且可靠。