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Soft multifocal simultaneous image contact lenses: a review

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Pérez Prados, Roque and Piñero, David Pablo and Pérez Cambrodí, Rafael José and Madrid Costa, David (2017) Soft multifocal simultaneous image contact lenses: a review. Clinical and Experimental Optometry, 100 (2). pp. 107-127. ISSN 0816-4622

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/cxo.12488/full




Abstract

Soft multifocal simultaneous image contact lenses have boomed in recent years due to the growing number of presbyopic patients demanding visual solutions, allowing them to maintain their current standard of living. The concept of ‘simultaneous image’ is based on blur interpretation and/or blur tolerance of superimposed multiple images on the retina formed by various powers of a contact lens. This is the basis for a specific type of multifocal contact lens developed for the compensation of presbyopia. Manufacturers have released a great variety of soft simultaneous image lens designs to meet different patient needs but their fitting is still unsatisfactory in some cases. Some presbyopes discontinue wearing contact lenses due to some limitations in visual quality and comfort that can be overcome with an appropriate contact lens selection based on a comprehensive pre-fitting evaluation. This paper aims to review the different types of soft multifocal contact lenses that are currently available for presbyopic correction and to define the steps and factors crucial for their fitting, such as pupil, aberrations, accommodation and centring. A discussion about useful tools to achieve a customised fitting leading to a successful outcome, such as the defocus curve, power profile and questionnaires, is performed.


Item Type:Article
Uncontrolled Keywords:Defocus curve; Multifocal; Power profile; Pupil; Questionnaires; Spherical aberration;
Subjects:Medical sciences > Optics > Contact lenses
Medical sciences > Optics > Optometry
ID Code:44113
Deposited On:08 Sep 2017 12:02
Last Modified:08 Sep 2017 12:02

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