image contrast under all lighting conditions. The wavefront-designed optic corrects spherical aberrations to almost zero and provides a sharp quality of vision. Furthermore, the design and optic material are not associated with glistenings and minimize light scatter. Less capsular phimosis has been observed with IOLs based on the TECNIS® platform resulting in minimal IOL decentrations and improved vision quality.6
Conquering Presbyopia with Innovative IOL Technologies TECNIS® IOLs take the lead with breakthrough technology for high-quality visual
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ith innovations in Intraocular Lens (IOL) technologies, the aim of presbyopia treatment has shifted from mere improvement in functional vision to total visual rehabilitation with reduced dependence on glasses, minimal refractive errors and improved quality of functional vision.1 The use of digital technology encompasses a significant portion of our daily activities today, making goodquality intermediate vision a necessity. The importance of intermediate vision in presbyopia correction is further highlighted by its requirement for potentially risky daily activities such as driving cars and navigating stairs.2
Though monofocal IOLs are the most widely used option for cataract surgery, they do not provide adequate intermediate vision.
Surgical success factors
Traditional monofocal IOLs do not improve intermediate vision and patients often require bifocal/ multifocal glasses for intermediate and near activities.3 However, these come with safety concerns, as bifocals have been associated with falls and hip fractures, a serious consequence for the elderly.4
The key to success in surgical correction of presbyopia lies in choosing the most suitable IOL and optic design for a particular patient. In the past, increasing the depth of field with presbyopia- correcting IOLs compromised visual quality and caused dysphotopsias.5 However, the TECNIS® platform from Johnson & Johnson Vision is made of superior optic material and has a unique design for high-quality visual outcomes. The optical material (mid-index, low dispersion) used induces the lowest amount of chromatic aberrations and provides the highest
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Though monofocal IOLs are the most widely used option for cataract surgery, they do not provide adequate intermediate vision. Further, despite meticulous biometry and power calculation, the refractive targets are often not met. The TECNIS EyhanceTM is a next generation monofocal IOL which extends the depth of focus to improve intermediate vision while maintaining distance vision similar to that of a standard aspheric monofocal IOL.7 The power in the TECNIS EyhanceTM increases continuously from the periphery to the centre of the lens, resulting in enhanced intermediate vision than a standard aspheric monofocal IOL.8 While the distance vision is maintained comparable with that of a monofocal IOL, there is no statistical difference in rates of photic phenomenon.9 Due to its larger landing zone it is more forgiving to inaccuracies in biometry, providing the patient with good uncorrected visual acuity even if emmetropia is not achieved.10
Increasing penetration of LED lighting into our homes and offices poses a challenge to presbyopia correction.
Innovations that enhance While multifocal IOLs offer greater spectacle-independence compared with monofocal IOLs, they are associated with symptomatic glare and reduced contrast sensitivity. Within multifocal IOLs, diffractive IOLs are associated with better near vision and decreased symptomatic glare and halos, compared to refractive ones. However, it is seen that extended depth-of-focus (EDOF)
