Implantable Lens Treats Presbyopia

Normally, the iris causes the lens to change shape as one looks at objects at varying distances. This phenomenon, called accommodation, allows the eye to focus at different lengths. When accommodation is impaired, the eye is unable to adjust sufficiently to nearby objects. As a result, people with presbyopia may be seen holding reading material at arm's length in order to discern what is written.

The Tek-Clear, an accommodative intraocular lens made by Tekia (Irvine, Ca, USA) is a 5-mm implantable accommodative intraocular lens (IOL) that features a 360º full bag haptic square-edge design and an antiglare shield. Applications include its use in cataract surgery to restore near vision while correcting for other visual disorders such as hyperopia; and to restore near and intermediate vision in pre-cataract patients, thereby eliminating their need for glasses or contact lenses.

The IOL is implanted after the lens is surgically removed. It uses the eye's ocular structures to shift the lens forward and enable close-up vision, and then shifts back to the resting position to allow visualization of distant objects. The lens has received the CE Mark.




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