---
title: Custom Contact Lens Tools and Resources | SpecialEyes
description: Find all the tools and resources you need for SpecialEyes custom contact lenses.
---

# Tools and Resources

![tools and resources specialeyes contacts](https://www.specialeyesqc.com/hs-fs/hubfs/Website%20Assets%202021/Header%20Blob%20Graphics/optisync%20webinar%20header%20graphicpng.png?width=1062&height=893&name=optisync%20webinar%20header%20graphicpng.png "tools and resources specialeyes contacts")

## Fitting Guides

[Toric and Sphere Fitting Guide](https://www.specialeyesqc.com/toric-and-sphere#fitting)

[Multifocal Fitting Guide](https://www.specialeyesqc.com/multifocal#fitting)

[Bifocal Fitting Guide](https://www.specialeyesqc.com/multifocal#bifocalfitting)

[Multifocal Fitting Strategy](https://www.specialeyesqc.com/multifocal)

[3 Ways to Identify Multifocal Misalignment](https://blog.specialeyesqc.com/identify-multifocal-misalignment-issues)

## Fitting Calculators

[Arc Length Calculator](https://calculators.specialeyesqc.com/arc-length-calculator.php)

[Over-Refraction Calculator](https://calculators.specialeyesqc.com/over-refraction-calculator.php)

[Multifocal Simulator](https://calculators.specialeyesqc.com/multifocal-simulator.php)

[Diopter to mm Conversion](https://calculators.specialeyesqc.com/diopter-table.php)

## Webinars and Courses

[54 Multifocal Email Course](https://www.specialeyesqc.com/multifocal-course)

[Multifocal Simulator Email Course](https://www.specialeyesqc.com/simulator-course)

[Multifocal Simulator Videos](https://www.specialeyesqc.com/simulator)

[Multifocal Radio Show](https://www.specialeyesqc.com/multifocal-radio-show)

[Multifocal Toric Webinar](https://www.specialeyesqc.com/multifocal-toric-webinar)

[OptiSync Technology Webinar](https://www.specialeyesqc.com/optisync-technology-webinar)

## Blogs

[Solutions and Handling](https://specialeyesqc.com/solutions-and-handling.php)

[Quick Fit Nomogram](https://specialeyesqc.com/nomogram.php)

[How to Measure HVID](https://specialeyesqc.com/how-to-measure-hvid.php)

[Measuring Pupil Size](https://specialeyesqc.com/measuring-pupil-size.php)

[Customizing the Optical Zone](https://specialeyesqc.com/optical-zone.php)

 

## Case Studies

#### Single Vision

[High Astigmatism and Hyperopia](https://blog.specialeyesqc.com/soft-contact-lenses-for-astigmatism)

[High Astigmatism and Myopia](https://blog.specialeyesqc.com/precision-soft-contact-lens-design)

[Microcornea with High Hyperopia](https://blog.specialeyesqc.com/microcornea-case-study-3)

[Transition from Disposable In-Office Lens to Custom Soft Toric](https://blog.specialeyesqc.com/custom-toric-contact-lens-success)

#### Multifocal

[Smooth Transition from Toric to Toric Multifocal](https://blog.specialeyesqc.com/a-smooth-transition-into-specialeyes-multifocal-contact-lenses)

[Myopia, Astigmatism, and Presbyopia](https://blog.specialeyesqc.com/multifocal-contact-lens-design-case-study)

[High Hyperopia, Astigmatism, and Presbyopia](https://blog.specialeyesqc.com/multifocal-toric-contact-lens-case-study)

[Importance of Accurate Pupil Size for Initial Lens Design](https://blog.specialeyesqc.com/toric-multifocal-contact-lens-simulator-case-study)