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The PolyVue 43™ (ocufilcon A) Spherical, Toric and Aspherical Multifocal Hydrophilic Contact Lens (clear and visibility tinted) Is Indicated for dally wear for the correction of refractive ametropia (myopla and hyperopia), presbyopia and astigmatism In aphakic and non-aphakic persons with non-diseased eyes. Eyecare practitioners may prescribe the lens for dally wear in a Frequent Replacement Program. The lenses may be disinfected using heat, chemical or hydrogen peroxide disinfection systems.

Soft contact lenses are hemispherical shells manufactured of polymerized material of HEMA and methacrylic acid crosslinked with EGDMA, which yield the appearance of lenses, which are designed to fit over the corneal surface of the eyc. These lenses are designed with varying base curves which conform to the shape of the radius of the cornea and center over the apex of the cornea to provide corrective refi action of functional conditions of the eye including myopla (nearsightedness), hyperopia (farsightedness), presbyopia and astigmatism (multiple foci). Each lens provides corrective power, which is to correspond to the refractive power of the eye to which It Is being treated. Each lens is designed with a base curve on the internal side of the lens and an optical zone in the center of the lens which is generally of a diameter greater than 6mm. Spherical and aspheric curves as well as beveled edge configurations are built into the lens for alding in lens centration and comfort as well as providing additional add power for near and blocking spherical aberration.