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Near and Intermediate Visual Acuity in Clinical Studies with Multifocal Intraocular Lenses
Near and Intermediate Visual Acuity in Clinical Studies with Multifocal Intraocular Lenses

Failure to understand the purpose of why certain visual performance measures are taken can lead to the development of clinical trial protocols with long duration and therefore unreliable data due to patient fatigue.

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The Area Under the Defocus Curve
The Area Under the Defocus Curve

The Defocus Curve provides a wealth of information that can sometimes be difficult to interpret by looking at the results for each defocus in isolation.

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Advanced Analysis of the Defocus Curve
Advanced Analysis of the Defocus Curve

Defocus curve offers comprehensive information about what is the mean behavior of a multifocal procedure. However, a non-optimal analysis of the obtained data can lead to misinterpretation of the results. In this article, we are going to cover two problems in the statistical analysis of defocus curves.

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Intraocular Lens Constant Fitting
Intraocular Lens Constant Fitting

This article discusses the fitting of the constant in intraocular lens (IOL) calculation. It highlights the technological evolution and the concept of Effective Lens Position (ELPo). It presents vergence and thick lens equations, and mentions the Haigis formula with multiple regression.

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Which Contrast Sensitivity test to use in Simultaneous Vision Treatments?
Which Contrast Sensitivity test to use in Simultaneous Vision Treatments?

Optimal tests for measuring Contrast Sensitivity with Simultaneous Vision optical systems, such as Intraocular Lenses or Multifocal Contact Lenses.

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