Comparison of Far and near Contrast Sensitivity in Patients Symmetrically Implanted with Multifocal and Monofocal Iols

Abstract

The present results, which reflect intraocular lens (IOL) characteristics in optics, profile, and add power, may contribute to help surgeons decide on the type of IOL most suitable for each patient by taking into consideration the individual needs for critical distance and near vision, both in terms of visual acuity and contrast sensitivity.

Current management of presbyopia

“…The most recent multifocal IOLs with improved optics have enhanced intermediate distance, giving the patient a full range of vision 6465. Multifocal IOLs reduce contrast sensitivity and cause more glare and halos in comparison to monofocal IOLs 66. In some cases, these optical phenomena can be disturbing and a secondary intervention and IOL explantation might be required 67.…”

Vitrectomy for vitreous floaters

“…For example, the post-laser-assisted in situ keratomileusis, aging baby-Boomer generation is one such segment of the population that seems to want to be floater-free. Moreover, patients with multifocal intraocular lenses seem to have higher rates of symptomatic floaters, perhaps due to higher level of patient expectations, coupled with the diffractive nature of these lenses and decreased contrast sensitivity [25]. Now, more than ever, we have the technology to safely remove these floaters with minimal risk to the patient.…”

Simultaneous quantification of longitudinal and transverse ocular chromatic aberrations with Hartmann–Shack wavefront sensor

“…Table 6 shows LCA data reported in previous studies. The LCA measurements in recent studies focused on the visual-light band, owing to the signi¯cant interests in multi-focal (M)-IOL design 9,10 in vision science. Owing to the multi-wavelength fundus imaging, studies were also focused on the infrared light range.…”

“…Chromatic aberrations a®ect the resolution of the multi-wavelength fundus imaging [2][3][4] and reduce the visual function of a human eye with an intraocular lens (IOL). [5][6][7][8] In order to eliminate the negative in°uence of the chromatic aberrations in multi-wavelength imaging and design of achromatic IOLs, 9,10 it is necessary to study the chromatic aberrations of the human eye.…”