| 摘要 |
The new variable power accommodative intraocular lens is comprised by a central body or optical zone that has at least four dioptres that separate a minimum of three means. These are connected by means of a substrate that holds them in an equatorial manner, and which includes the bases of the fasteners of the lens embedded in its core. The lens changes its power in response to variations in the equatorial diameter of the means that comprise the optical zone. Thanks to its design, the lens achieves variations in the optical powers greater than one dioptre per micrometre of equatorial compression. This is achieved through the real change of the curvature radii of the dioptres that comprise the optical zone, as well as the central thicknesses along the length of the optical axis of the different means that limit said dioptres. Preferably the intraocular lens works in combination with a capsular ring, to which the fasteners are fixed and whose external diameter determines the power of the lens. The change of power mechanism in the lens initiates with the contraction of the ciliary muscle of the patient in response to the accommodative force. |
