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The modern contact lens combines state-of-the-art advances in optics, mechanical engineering, and material science to provide correction for a full...



= Encyclopedia Article; = Research Update
Figure 1.Common vision problems include (a) myopia, (b) hyperopia, and (c) astigmatism.
From update 'Contact lenses'
Figure 2.Relative diameters of RGP and soft lenses.
From update 'Contact lenses'
Figure 3.Schematic of (a) slab-off toric and (b) multifocal bifocal soft lenses.
From update 'Contact lenses'