Different objects located at varying distances require our crystalline lens to instantly adjust to see them clearly.
Around age 43, most people begin to notice they must hold reading material farther away than usual.
To correct this problem, bifocals, reading glasses or monovision contact lenses are increasingly required so by age 50 there is generally total dependence on corrective lenses.
Multifocal lenses provide various degrees of distance and near vision depending on the design of the lens.
Accommodating lenses* helps to correct presbyopia by restoring some of the eyes ability to accommodate* to near targets. In general, patients who choose to have monofocal lens implants will be dependent on glasses either some or most of the time in about 95% of cases.
The Re Zoom IOL is a second-generation refractive IOL, that enhanced some aspects of the Array design, such as enlargement of the second and third zones, reduction of the fourth and fifth zones and an aspheric transition between zones so that visual disturbances could be reduced.
In a prospective randomized study comparing Crystalens, Re STOR, and Tecnis IOLs, the Re STOR demonstrated better UNVA compared with Crystalens and Tecnis, with the Crystalens accommodating IOL demonstrating better intermediate and low-contrast distance-corrected vision compared to Re STOR and Tecnis.
View video: Why we need reading glasses as we mature.
The crystalline lens of the eye which has become cloudy and no longer perfectly transparent to light is called a Cataract; this condition results in hazy vision.
Here, experienced surgeons offer their opinions on the advantages of the toric lenses currently available, and advice for getting optimum results when implanting them.
The first toric option approved in the United States, still in use, was the STAAR single-piece plate toric IOL.
Accommodation refers to the ability of the crystalline lens (located behind the pupil) of the eye to change shape in order to bring into focus objects located at different distances from our face.