The Effect of Eyeliner on Tear Composition, Tear Secretion and Tear Film Stability.
Recruiting
Observational Study
Dry Eye
No Placebo Group
Every participant receives an active treatment — no one gets a placebo.
Healthy Volunteers Welcome
You do not need to have the condition being studied to take part.
No Study Drug
Researchers observe your health over time — no experimental treatment is given.
At a Glance
- Age
- 20 – 35
- Sex
- Female
- Study type
- Observational
- Participants needed
- 80 (estimated)
- Sponsor
- Zhongnan Hospital · Other
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About This Trial
Eyeliner is one of the most common eye cosmetics. The main ingredients are titanium oxide, pigment, grease and preservative. The user will apply the eyeliner to the eyelid and eyelash. With the blinking again and again, the components of the eyeliner may enter the tear film and continue to act on the eye surface. Therefore, the investigators suspect that the use of eyeliner may be an important fac…
Trial Locations
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Eligibility Criteria
Inclusion Criteria:
* People aged 20-35 who use eyeliner or do not use eyeliner .
* People who use eyeliner have used it for ≥ 1 year; Frequency ≥ 3 times/week.
Exclusion Criteria:
* Other serious systemic diseases.
* Other systemic diseases related to ocular surface, such as rheumatoid arthritis…
Contacts