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Optical Quality and Vision with Iris-Coloring Soft Contact Lenses

Ortiz, Carolina*; Jiménez, Raimundo*

Optometry and Vision Science: May 2014 - Volume 91 - Issue 5 - p 564–569
doi: 10.1097/OPX.0000000000000212
ORIGINAL ARTICLES
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Purpose To study the influence of iris-coloring soft contact lenses, designed for changing apparent iris color, on optical quality and vision.

Methods Eighty subjects were included in this study. All participants were classified as emmetropic, with monocular best-corrected visual acuity of 20/20 or better. For 40 subjects, we measured the optical quality (aberrations, the Strehl ratio, and the objective scattering index) and visual performance before and after wearing the cosmetic soft contact lenses. We also measured the optical quality and visual performance for the other 40 subjects but with a different kind of lens (fantasy soft contact lenses).

Results Iris-coloring soft contact lenses significantly increased coma-like and total higher-order aberrations and objective scattering index (p < 0.05). We also found a significant deterioration in the Strehl ratio. The contrast sensitivity function significantly decreased only after wearing the fantasy soft contact lenses (p = 0.047).

Conclusions Iris-coloring soft contact lenses deteriorate the optical quality and worsen the contrast sensitivity function. Iris-coloring soft contact lens wearers should be informed about the effects on optical quality and visual function.

*PhD

Department of Optics, Laboratory of Vision Sciences and Applications, University of Granada, Granada, Spain (both authors).

Carolina Ortiz Department of Optics University of Granada Edificio Mecenas, Campus Fuentenueva s/n Granada 18071 Spain e-mail: ortizh@ugr.es

© 2014 American Academy of Optometry