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

Inclusion Criteria: 1. Age between 18-60 2. Native Chinese citizens with Chinese as first language 3. Wearing history with spherical disposable SCL (daily disposable, 2 weeks, or monthly disposable) for a least 1 months; 4. Willing to sign informed consent Exclusion Criteria: 1. Any extended wear of SCLs, including wearing toric or multi-focal SCLs 2. Use SCL for monovision correction 3. Having clinically significant anterior segment abnormalities (including iritis and infection of the eye, lids, or ocular adnexa) 4. Having ocular or systemic disease that would preclude SCL wearing 5. Best corrected visual acuity of less than 0.8 in either eye 6. History of refractive or other types of corneal surgeries 7. Having eyelid abnormalities or functional ocular disorders that would induce relevant discomfort. 8\) Having congenital or systemic conditions that would limit the capacity to answer the questionnaire