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Refractive Lens Surgery

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13<br />

CORE MESSAGES<br />

Sarfarazi Elliptical Accommodative<br />

Intraocular <strong>Lens</strong><br />

Faezeh Mona Sarfarazi<br />

2 The elliptical accommodative intraocular lens (EAIOL) is a unique<br />

approach that utilizes two optics connected by three haptics. The<br />

optical design includes an anterior optic that is biconvex (plus lens)<br />

and a posterior optic that is a concave convex (minus lens).<br />

2 The haptics are uniquely designed to serve a dual function. First,<br />

they are elliptically shaped to conform to the natural shape of the<br />

capsule to correctly position and center the optics. Second, the<br />

haptics provide the resistance force necessary to separate the two<br />

optics.<br />

2 This single-piece silicone lens is designed to achieve accommodation<br />

through the natural contraction/relaxation of capsule by the<br />

ciliary muscle.<br />

2 The primary objective of this research was to determine whether<br />

the EAIOL could effect significant changes in optical power in the<br />

monkey eye.<br />

2 <strong>Lens</strong> design and mold were developed to match the size and characteristics<br />

of monkey eyes.<br />

2 This lens, when tested in primates, induced 7–8 diopters of accommodation.<br />

2 A clinical study in humans began in 2004.

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