Differences in contrast sensitivity between monofocal, multifocal and accommodating intraocular lenses: long‐term results

Abstract

In patients with unilateral cataract, monofocal, accommodating and partially diffractive multifocal IOL provided higher CS scores when compared with refractive multifocal IOL and in multifocal IOL groups binocular CSs were better than monocular CSs when compared with other groups.

Comparison of a new-generation sectorial addition multifocal intraocular lens and a diffractive apodized multifocal intraocular lens

“…2 Most multifocal IOLs are refractive or diffractive in design. The classic designs can cause side effects, including loss of contrast sensitivity, 3 halos and dysphotopsia, and patient dissatisfaction. [4][5][6] Because success with these IOLs requires high patient motivation, 1 newer designs have been developed in an attempt to address the side effects.…”

Comparison of visual outcomes of 2 diffractive trifocal intraocular lenses

“…3 Furthermore, on optical bench testing, diffractive IOLs provided better optical quality, better contrast sensitivity, and less photic phenomena than refractive IOLs. 4,5 Classic multifocal IOLs are bifocal and thus dependent on 2 focal points that represent the 2 working distances (far and near) at which they produce a sharp image on the retina. The intermediate working distance, such as that used for computer work, falls between these 2 focal points, which results in poor intermediate visual acuity and the need for spectacles for intermediate vision in many cases.…”

In vitro optical quality measurements of three intraocular lens models having identical platform

“…The performance of multifocal IOLs also varies depending on their design. When a comparison is made between refractive and diffractive multifocal IOLs, studies show that the diffractive IOLs are better in terms of near visual acuity, contrast sensitivity, and dysphotopsia [29–31]. Furthermore, as there are differences in the optical design of diffractive IOLs, such as those additionally featuring apodization or convolution as an effort to improve the contrast sensitivity [5, 6], each diffractive IOL has an optical characteristic unique to its innate design.…”