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  • Title: Corneal curvature and supplemental power effect of the Bausch and Lomb SOFLENS contact lens.
    Author: Sarver MD, Harris MG, Polse KA.
    Journal: Am J Optom Physiol Opt; 1975 Jul; 52(7):470-3. PubMed ID: 1180322.
    Abstract:
    The supplemental power effect (SPE) of F series Bausch and Lomb SOFLENS (polymacon) Contact Lenses was determined for a sample of 54 eyes. The mean value was +0.34 D=S.D.+/-0.37 D, range zero to +1.00 D. A significant correlation was present between the SPE and the apical lens-cornea bearing relationship. (p less than 0.01). The results of this study provide refractive evidence that a central lens-cornea alignment is achieved when the posterior apical radius of the lens is about 0.5 mm flatter than the flat radius of the cornea, S.D.+/-0.35 D. This information is clinically useful in assessing the patient's visual response as well as the fit of the lens.
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