Date of Award
Master of Science in Vision Science
Graham B. Erickson
Background: The use of tinted and clear contact lenses in all aspects of life is becoming a more popular occurrence, particularly in athletic activities. This study broadens previous research regarding MAXSIGHTTM contact lenses and their effects on objective and subjective visual performance.
Methods: 33 subjects (14 male, 19 female) were placed in clear B&L Optima@ 38,50% VLT Amber Nike MAXSIGHTTM Contact Lenses and 36% VLT Grey-Green Nike MAXSIGHTTM contact lenses in an individualized randomized sequence. Subjects were dark-adapted with welding goggles prior to testing and in between sub-tests involving a Bailey-Lovie chart and the Haynes Distance Rock test. The sequence of testing was repeated for each lens modality.
Results: MAXSIGHTTM Amber and Grey-Green lenses enabled subjects to recover vision faster compared to clear lenses. Also, subjects were able to achieve better visual recognition in bright sunlight when compared to clear lenses. Additionally, the lenses allowed the subjects to alternate fixation between bright and shaded conditions at a more rapid rate as compared to clear lenses. Subjects preferred both MAXSIGHTTM Amber and Grey-Green lenses over clear lenses in the bright and shadowed conditions.
Conclusions: The results of the current study show that MAXSIGHTTM Amber and Grey-Green lenses provide better contrast discrimination in bright sunlight, better contrast discrimination when alternating between bright and shaded conditions, better speed of visual recovery in bright sunlight, and better overall visual performance in bright and shaded conditions.
Barney, Tyler J. and Pexton, Brett A., "Contrast discrimination with Nike Maxsight contact lenses in natural light" (2007). College of Optometry. 1545.