Contact lens fitting is a meticulous process that encompasses various factors, including precise measurements, the selection of suitable materials, and comprehensive fitting guidance, especially for multifocal lenses. This dedicated page serves as a valuable resource hub, offering links to tools and references aimed at simplifying and enhancing the contact lens fitting experience for your patients.
Contact Lens Calculators
It can be tough to remember certain equations and rules when it comes to selecting contact lens parameters. The Eye Care Advocate has compiled a selection of calculators that will aid in your contact lens clinics, should you need assistance.
Back Vertex Distance Calculator – by Gareth Cooper
Back Vertex Distance Calculator
Use this online tool to easily calculate a contact lens power from a spectacle prescription of any given back vertex distance.
Contact Lens Power Calculator – by Bausch & Lomb
This contact lens power calculator provides quick calculation of contact lens powers from spectacle prescription, providing a recommendation on an initial trial lens. Be advised that this does not allow for custom back vertex calculations and may provide inaccurate suggestions of powers from different manufactures regarding their toric and multifocal suggestions. Additionally, there is no option to select the patient’s dominant eye.
Multifocal Fitting Calculator – by Johnson & Johnson
Johnson & Johnson Multifocal Fitting Calculator
This contact lens power calculator provides quick calculation of contact lens powers from spectacle prescription, providing a recommendation on an initial trial lens from the Johnson & Johnson contact lens range. Be advised that this does not allow for custom back vertex calculations (but does calculate from a stated 12 mm BVD) and may provide inaccurate suggestions of powers from different manufactures regarding multifocal suggestion.
This calculator also provides the option to select the patient age and ocular dominance, which may even improve the recommendations for the most optimal initial lens.
Upon recommendation of the initial trial lens, it also provides options on what to select if you require an enhancement to either near or distance vision.
Myopia Calculator – by Brien Holden Vision Institute
The Myopia Calculator, a free tool from the Global Myopia Centre, courtesy of the Brien Holden Vision Institute, aims to connect research data with users. It presents different ways to manage myopia, illustrating potential benefits over time for those considering myopia progression treatment.
Please note, this requires registration and log in to the Brien Holden Vision Institute Website.
Multifocal Fitting Guides
Selecting the right multifocal lens for your patient can be difficult, especially if there are a range of different lenses available to fit in your practice, as different lenses require different initial lens selections in order to successfully fit the desired brand of contact lens. This section covers the main multifocal lenses seen in general optometric practice and provides a link to the lens’ fitting guide on the relevant manufacturer’s website.
Alcon
The below links are for the multifocal lenses that are available from Alcon. The links will take you to the relevant guide on the Alcon website. Please note, the fitting guides relate to all the lenses within the Alcon lens family (i.e. sphere, torics multifocals), with details found further into the guide (see guide contents for further information).
Alcon Air Optix Multifocal Fitting Guide
Alcon Focus Dailies AquaComfort Plus Multifocal Fitting Guide
Bausch & Lomb
The below links are for the multifocal lenses that are available from Bausch & Lomb. The links will take you to the relevant guide on the Bausch & Lomb website.
Bausch & Lomb Biotrue ONEDay for Presbyopia Multifocal Fitting Guide
Bausch & Lomb PureVision2 for Presbyopia Multifocal Fitting Guide
Coopervision
The below links are for the multifocal lenses that are available from Coopervision. The links will take you to the relevant guide on the Coopervision website. They have also provided a general multifocal guide, which can be accessed by clicking here > Coopervision Universal Multifocal Fitting Guide.
Coopervision Biofinity Multifocal Fitting Guide
Coopervision Clariti 1-Day Multifocal Fitting Guide
Coopervision Clariti Monthly Multifocal Fitting Guide
Coopervision Proclear 1-Day Multifocal Fitting Guide
Johnson & Johnson
The below links are for the multifocal lenses that are available from Johnson and Johnson. The links will take you to the relevant guide on the Johnson & Johnson website.
Johnson & Johnson Multifocal Fitting Calculator
Johnson & Johnson 1-Day AcuVue Moist Multifocal Fitting Guide
Please note, The Eye Care Advocate will accept no responsibility over your fitting techniques and links are for reference to the official fitting guidance only. Use your professional judgement when performing contact lens appointments and always work within your scope of practice. Whilst every effort to keep these links updated, new releases and discontinued lines may occur between maintenance updates. If there are any concerns with the links provided, or you feel a link needs to be added or removed, please contact us and we will endeavour to rectify accordingly.
Links last reviewed 28/12/2023