Accommodating lenses

The Nu Lens accommodating IOL is designed to change its true power during accommodation and has been shown in an animal model to deliver over 40 D of accommodation.The Nu Lens incorporates a small chamber of silicone gel and a posterior piston with an aperture in its center that allows the gel to bulge relative to the forces generated by accommodation (Figure 6).Single-optic, accommodating IOLs function by changing their position in the capsular bag during accommodative effort with a resulting increase in the effective power but not the inherent power of the lens.

Accommodating lenses can currently be classified into 3 categories: (1) single-optic, (2) dual-optic, (3) and deformable optic IOLs.Accommodating IOLs may very well transform the practice of cataract and refractive lens surgery.This is because accommodative IOLs can potentially provide unaided near visual acuity without the optical aberrations and image degradation that may accompany multifocal IOL implantation.A recent study using pilocarpine 2% to simulate accommodation and partial coherence interferometry to measure the changes in anterior chamber depth (and, thus, forward movement of the IOL) revealed no more than 0.50 diopters (D) of accommodative amplitude in most cases 2003;9-676).The Morcher Bio Comfold 43E is not approved by the United States Food and Drug Administration (FDA).

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The Human Optics 1CU is a hydrophilic, acrylic, foldable, single-piece lens with a biconvex square-edge optic and 4 modified flexible haptics that allow for forward movement of the optic during accommodative effort (Figure 1).

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