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Customized IOLs offer ‘near perfect’ retinal image quality

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Wavefront-customized IOLs leave only diffraction, chromatic aberration, retinal sampling and neural factors as potential vision limitations in pseudophakic eyes, according to a study.

Griffith E. Altmann noted in the August issue of Current Opinion in Ophthalmology that recent advances in ocular wavefront measurement and in IOL materials and manufacturing methods have brought cataract surgery to the point where customized correction of higher-order aberrations with IOLs may become standard practice.

He noted the Tecnis Z9000 (Pfizer) was designed to correct spherical aberration, but “if the lens decenters or tilts modestly, higher-order aberrations are created, and the lens may underperform.” He added one company is developing an IOL that can be modified in vivo with near ultraviolet energy. In short, he noted, newer technologies are enabling surgeons to implant “fully customized” IOLs.