Research accommodating lens

The design parameters outlined herein can be used as a template to maximize the performance of a deformable interface intraocular lens.

Natural accommodation is the eye's ability to change the shape of its lens, and thereby change its focal distance.

The anchoring haptic design provides a stationary support for the IOL, which prevents the whole lens from translating anteriorly during accommodation.

The extruded gel design's efficacy has been shown in vivo, replicating accommodation with the eye's available natural accommodating force. When the ciliary muscle is relaxed (during distance focusing of the eye), tension is increased on the zonules and the lens capsule and applied pressure extrudes the gel through the aperture acting as a variable power lens directly proportional to the physiologic accommodative force.

The results has been fair, but the design compromises the overall quality of the vision and the continuous quality of natural accommodation.

These concepts all incorporate a shape changing interface using the radial zonular tension provided by relaxation of the ciliary muscle.

The extruded interface is recognized as the critical component of the gel accommodating lens.

The other components fixate and maintain a base diopteric power to the lens, which have been shown effective in prior studies.

The relaxed tension decreases the pressure and reverses the extrusion increasing the power of the lens, equivalent to natural accommodation.

Several attempts have been made to restore accommodation with cataract surgery.

The most successful of these rely upon lenses with two or three discrete focal distances.

The zonular tension is then translated to provide an anterior vectored force on the accommodating lens allowing it to alter the curvature of the lens' interface and the overall lens power.

The extruded gel intraocular lens (IOL) concept extrudes a gel material through a rigid circular aperture, which deforms in a more or less spherical shape.

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This allows an individual to focus on an object at any given distance in their view with an autonomic nervous system feedback response.

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