Chromatic aberration and spectral dependency of extended-range-of-vision intraocular lens technology

Abstract

This study compared the optical quality and chromatic performance of refractive-diffractive intraocular lenses (IOLs) that are designed to extend the range of vision of pseudophakic patients and alter chromatic aberration. Five IOLs were evaluated, Tecnis Synergy and Triumf POD L GF, both intended to compensate for eye's chromatism, as well as Acriva Trinova Pro C—a lens that increases chromatic aberration, and AT Lisa Tri and AcrySof IQ PanOptix. An optical setup composed of a corneal model inducing monochromatic and chromatic aberrations and incorporating various spectral conditions was employed. The two chromatic-aberration correcting IOLs demonstrated the lowest far-focus dispersion, but it was negative only, with the Synergy indicating its ability to reduce eye’s chromatic aberration. Although the Trinova increased far-point chromatism, it was close to the level of the PanOptix, but higher than that of the AT Lisa. All the studied models demonstrated varying optical quality in response to light color. Still, the strongest spectral dependency was associated with achromatizing technology. Therefore, chromatic aberration and wavelength dependency should be considered in IOL optimization and predicting visual function, particularly in non-white spectral conditions.

Fabrication and performance evaluation of a design for an extended depth-of-focus intraocular lens based on an improved sinusoidal profile

“…The findings suggest that the imaging of the Symfony has a spectral dependence, which may cause a bias in the patient's color perception. The spectral dependence of the Symfony and some trifocal IOLs was also observed in other studies [ 28 , 29 ]. Contrary to this, no spectral dependence was observed in the through-focus images formed by the fabricated IOL.…”

A color correction method to minimize lateral chromatic aberration in spherical lens stacks

“…Chromatic aberration may occur longitudinally or laterally 5–9 . When incident visible rays parallel with the axial plane propagate through a lens, the foci of lights with different colors may vary longitudinally along the optical axis.…”

“…Chromatic aberration may occur longitudinally or laterally. [5][6][7][8][9] When incident visible rays parallel with the axial plane propagate through a lens, the foci of lights with different colors may vary longitudinally along the optical axis. This type of color distortion phenomenon is referred to as longitudinal or axial chromatic aberration.…”

Altering chromatic aberration: how this latest trend in intraocular-lens design affects visual quality in pseudophakic patients

“…The reported LCA values for pseudophakic eyes range from 0.45 D to 1.45 D, which despite inter-subject variability, also depend on the lens model, the light spectrum, and the measurement procedure [10,11]. The increasing awareness of the magnitude of LCA in the pseudophakic population has led to the current trend among IOL manufacturers to correct the IOL's and eye's chromatism in presbyopia-correcting IOLs through a diffractive principle [12][13][14][15]. Laboratory studies have shown that such designs indeed reduce the impact of LCA on the polychromatic image quality when tested in a model eye [12][13][14][15].…”

“…The increasing awareness of the magnitude of LCA in the pseudophakic population has led to the current trend among IOL manufacturers to correct the IOL's and eye's chromatism in presbyopia-correcting IOLs through a diffractive principle [12][13][14][15]. Laboratory studies have shown that such designs indeed reduce the impact of LCA on the polychromatic image quality when tested in a model eye [12][13][14][15].…”