SEATTLE, WA (October 24, 2013) – Due to differences in ocular and eyelid anatomy, soft toric contact lenses may demonstrate different fitting characteristics on Asian eyes compared to Caucasian eyes.1 However, a new study reveals that 1-DAY ACUVUE® MOIST® Brand Contact Lenses for ASTIGMATISM settle quickly, maintain stable orientation throughout the day, and provide good visual performance on Asian eyes. The findings were presented today at The American Academy of Optometry meeting.
“This study demonstrates the ease with which astigmats of Asian descent can be successfully fit with 1-DAY ACUVUE® MOIST® Brand for ASTIGMATISM,” says study co-author Kathrine Osborn Lorenz, OD, MS, FAAO, Head of Global Strategic Claims, VISTAKON® Division of Johnson & Johnson Vision Care, Inc. “The lens’ proprietary BLINK STABILIZED™ Design allows the lens to settle quickly, and provides clear, stable vision throughout the day, even for more challenging eyes. This is good news for Asian astigmats as we know from earlier studies that toric soft contact lenses provide significantly better visual acuity compared to spherical lenses, and provide comparable visual acuity to spectacle wear for these patients.”2
About the Study
The 66-subject, one-day, multi-center study investigated whether 1-DAY ACUVUE® MOIST® for ASTIGMATISM fit satisfactory on Asian eyes with respect to settling time, rotational stability throughout the day, and visual performance. All subjects were of Asian descent, with 46 percent being of Japanese ethnicity, and were habitual soft contact lens wearers in both eyes with astigmatism (cylinder correction) between 0.75 D and 2.25 D. Lens rotation was measured at one minute, three minutes, and 15 minutes following insertion, and again at the end of the wearing day, which fell between six and 12 hours after dispensing. Monocular distance visual performance (logMAR) was measured using ETDRS charts while subjects wore their best corrected spherocylinder refraction at the fitting visit, and again following settling of 1-DAY ACUVUE® MOIST® for ASTIGMATISM at the same visit. Monocular visual performance following settling was compared to that with the best corrected spherocylindrical refraction using least-squares means from a linear mixed model.
At one minute post-insertion, lenses were within 10 degrees of correct orientation for 92 percent of subjects, and at 15 minutes post-insertion, this increased to 98 percent of subjects. All lenses demonstrated less than 8 degrees of rotation with eye versions at the end of the wearing day.
Monocular visual performance with 1-DAY ACUVUE® MOIST® for ASTIGMATISM following settling was equivalent to visual performance with the best corrected spherocylindrical refraction (-0.105 vs. -0.098 logMAR respectively; difference [95 percent confidence interval]: -0.007 [-0.019, 0.005]). The study was supported by funding from Johnson & Johnson Vision Care, Inc.
Source: Osborn, KO, Straker, B, Toubouti, Y, “Rotational Stability and Visual Performance of 1-DAY ACUVUE® MOIST® for ASTIGMATISM Contact Lenses on Asian Eyes.” Poster presented October 24, 2013 at The American Academy of Optometry 2013 meeting.
ACUVUE® Brand Contact Lenses are indicated for vision correction. As with any contact lens, eye problems, including corneal ulcers, can develop. Some wearers may experience mild irritation, itching or discomfort. Lenses should not be prescribed if patients have any eye infection, or experience eye discomfort, excessive tearing, vision changes, redness or other eye problems. Consult the package insert for complete information. Complete information is also available from VISTAKON® Division of Johnson & Johnson Vision Care, Inc., by calling 1-800-843-2020.
ACUVUE®, 1-DAY ACUVUE® MOIST®, BLINK STABILIZEDTM, and VISTAKON® are trademarks of Johnson & Johnson Vision Care, Inc.
- Hickson-Curran, S et al. “Characterizing the Chinese, Japanese and Caucasian Anterior Eye.” Optom Vis Sci 2013;90:E-abstract
- Sulley, A, Young, G, Osborn, K, Hunt, C, “How Easy Is It to Fit Soft Toric Contact Lenses to Current Non-users?” – presented at American Academy of Optometry meeting (Boston, MA, October 2011)