Eyeliner clouds vision
Natalee Blagden | June 24, 2015While fashion comes and goes, your eyes are forever. That's why one Waterloo researcher is cautioning people who wear contact lenses, but love the drama of heavy eye makeup, to consider wearing daily disposable lenses. Alison Ng, a postdoctoral fellow at the University of Waterloo’s Centre for Contact Lens Research (CCLR), studied what happens when eyeliner is applied to the “waterline” — the inner part of the eyelash line. She found the eyeliner moves on from the waterline to the tear film — the thin, wet layer that protects the eye. In her research, Ng captured more than 200 frames of video at timed intervals of her subject’s eyes. She and her research team then used specialized software to count every tiny particle of glitter that appeared on the surface of the eye and the results were clear: when we apply makeup along the waterline, eyeliner moves into the tear film. Contact lenses compound the problem While that’s not good news for anyone, Ng’s research showed that the eyeliner gets flushed away by your tears within a couple of hours. But people who wear contact lenses run bigger risks because the makeup can get trapped and affect vision. Lenses worn for multiple days are especially problematic because they continually re-introduce and collect unwanted debris, cautions Ng. “This can create cloudiness in contact lenses and disrupt vision,” she says. “For anyone who wears heavy makeup or enjoys regularly applying beauty products around the eye, I would recommend daily disposable lenses.” Anyone with dry eyes — thanks to genetics, environment, or staring at a screen all day — may also be susceptible to more noticeable irritation, Ng says. Her study used healthy females without contact lenses as a baseline, but the connection to dry eyes and contacts is obvious. Watch for redness and itchiness Ng conducted the research while completing her PhD at Cardiff University in Wales, U.K. The findings appear in the journal Eye and Contact Lens, the official peer-reviewed journal of the Contact Lens Association of Ophthalmologists. Redness, itchiness, or irritation are all signs that it may be time to change your makeup routine to keep your eyes clear and healthy, she says. “You have to think about cosmetic use at all stages. Consider which products you choose, how you apply the products and how you remove them at bedtime,” says Ng. Prevent bacterial transfer by sharpening eye pencils thoroughly before each use. Twist-up products are tricky, but manageable, says Ng. She recommends that people who favour this style of eyeliner trim a small piece of eyeliner from the end of the product before every application.