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*GfK’s Contact Lens Market Intelligence: Sales & Fits tracking services deliver representative measurements and insights into the observed and defined distribution channels and thus the GfK panel market. The services are based on adequately extrapolated panel observation with continuously tracked panel outlets, sampled purposive (contrary to random), stratified, disproportional and carried out in accordance with general accepted statistical methods.



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References
* GfK’s Contact Lens Market Intelligence: Sales & Fits tracking services deliver representative measurements and insights into the observed and defined distribution channels and thus the GfK panel market. The services are based on adequately extrapolated panel observation with continuously tracked panel outlets, sampled purposive (contrary to random), stratified, disproportional and carried out in accordance with general accepted statistical methods.
1. In a clinical study wherein patients (n=66) used CLEAR CARE solution for nightly cleaning, disinfecting,and storing; Alcon data on file, 2021.
2. Schnider C. Evaluating Monthly Replacement CL Patient Satisfaction. Abstract and lecture presented at the American Academy of Optometry Conference 2016, Orlando, FL.
3. GfK Market Intelligence: US CL Fit Tracking 2019. US Fit Market.
4. Surface observations of lehfilcon A contact lens and human cornea using scanning transmissions electron microscopy; Alcon data on file, 2020.
5. In vitro analysis of lens oxygen permeability, water content, and surface imaging; Alcon data on file 2021.
6. Shi X, Cantu-Crouch D, Sharma V, et al. Surface characterization of a silicone hydrogel contact lens having bioinspired 2-methacryloyloxyethyl phosphorylcholine polymer layer in hydrated state. Colloids Surf B: Biointerfaces. March 2021;199:111539.
7. Ishihara K, Fukazawa K, Sharma V, Liang S, et al. Antifouling silicone hydrogel contact lenses with a bioinspired 2-methacryloyloxyethyl phosphorylcholine polymer surface. ACS Omega. 2021;6:7058-7067.
8. Morgan PB, Woods CA, Tranoudis JG, Efron N, Jones L, Aighamdi W, et al. International Contact LensPrescribing in 2020. Contact Lens Spectrum. 2021(January).
9. Nichols JJ, Wilcox MOP, Bron AJ, et al. TFOS International Workshop on Contact Lens Discomfort: Executive Summary. Invest Ophthalmol Vis Sci. 2013;54:TFOS7-TFOS13.
10. Dumbleton K, Woods CA, Jones LW, Fonn D. The impact of contemporary contact lenses on contact lens discontinuation. Eye Contact Lens. 2013;39(1):93-99.