Chinese Translation and Validation of the 8-item Contact Lens Dry Eye Questionnaire (CLDEQ-8)

The aim of this study is to translate the 8-item Contact Lens Dry Eye Questionnaire (CLDEQ-8) into Chinese and evaluate its validity, and reliability among soft contact lens wearers in China. One hundred and thirty-four Chinese soft contact lens wearers will be included in the study. Subjects are required to complete the Chinese version of the 8-item Contact Lens Dry Eye Questionnaire (C-CLDEQ-8) on paper before eye examinations. A subgroup of 50 participants will be asked to complete C-CLDEQ-8 twice to evaluate the repeatability.

Inclusion criteria

• Age between 18-60
• Native Chinese citizens with Chinese as first language
• Wearing history with spherical disposable SCL (daily disposable, 2 weeks, or monthly disposable) for a least 1 months;
• Willing to sign informed consent

Exclusion criteria

• Any extended wear of SCLs, including wearing toric or multi-focal SCLs
• Use SCL for monovision correction
• Having clinically significant anterior segment abnormalities (including iritis and infection of the eye, lids, or ocular adnexa)
• Having ocular or systemic disease that would preclude SCL wearing
• Best corrected visual acuity of less than 0.8 in either eye
• History of refractive or other types of corneal surgeries
• Having eyelid abnormalities or functional ocular disorders that would induce relevant discomfort.

• Having congenital or systemic conditions that would limit the capacity to answer the questionnaire