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B. T. Kinoshita, D. Lam, G. L. Mitchell, H. Wagner, R. Chalmers, M. Jansen, K. Richdale, L. Sorbara, CLAY study group; Distribution of Baseline Soft Contact Lens Power by Age in the Contact Lens Assessment in Youth (CLAY) Study. Invest. Ophthalmol. Vis. Sci. 2010;51(13):1512.
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© ARVO (1962-2015); The Authors (2016-present)
To characterize the distribution of baseline soft contact lens (SCL) correction by age at presentation in a retrospective chart review of SCL wearers.
A chart review was conducted of 3,549 SCL patients from 8 to 33 years old at six academic clinics in North America. All clinical eye care visits from January 2006 to 2009 were captured into a centralized database. Among the data captured were SCL power (+8.00 to -12.00 D) and SCL type at each visit. SCL power and type was analyzed for the right eye only.
At the baseline visit, the frequency of SCL powers was greatest from plano to -3.75 D (63%) and the least > +4.00 (1%). More than 15% of the 8 to 12 year olds presented with SCL power > +4.00 D while 15% of 26 to 33 year olds had SCL powers > -6.00 D. A significantly (p<0.0001) higher percentage of 8 to 12 year olds were found to have hyperopic lens power (+0.25 to +8.00 D) when compared to 13-33 year olds (p<0.0001). Conversely, a significantly (p<0.0001) greater percentage of the 26 to 33 year olds demonstrated high myopia (> -6.00 D). The highest rate of anisometropia (>1.00 D spherical equivalent difference between eyes) was in the 8 to 12 year olds (14%) compared to 9% of the 13 to 33 year olds (p=0.006). There was a higher frequency of daily disposable prescriptions for 8 to 12 year olds compared to all other patients (p=0.04). Toric prescriptions were not more likely among 8 to 12 year olds (p=0.09).
Baseline data show a different refractive profile for SCL correction for children from ages 8 to 12 as compared to adolescents and young adults. Practitioners are likely prescribing SCL for management of anomalies associated with high hyperopic refractive correction and anisometropia in children.
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