It is becoming increasingly important to obtain best possible refractive results in any case of a cataract surgery. In addition to so-called premium IOLs such as multifocal/trifocal lenses and enhanced depth of focus (EDOF) lenses, there are also monofocal and monofocal+ lenses of various manufacturers which have certain advantages and disadvantages.

At the beginning of a market launch and short after first approvals, ophthalmic surgeons must rely on advertising and data from companies. It takes some time until clinical experience and long-term data is available. Therefore, in vitro examinations on the optical bench are very important. Measurements of the modulation transfer function (MTF) and Strehl can be used to make a statement about the quality of an IOL. Furthermore, wavefront measurements are becoming increasingly important, especially in evaluating optic design features of premium IOLs. USAF Test Targets are a great way to show the quality of the IOL as well as possible differences between optic design elements.

The aim of this Special Issue is to collect high-quality publications on this subject from all over the world, to obtain a good overview of various modern IOLs and their optical principles with advantages and disadvantages. Original research and review articles are welcome.

Potential topics include but are not limited to the following:

• IOL quality
• MTF
• Strehl
• USAF targets
• Wavefront measurements
• Centration and decentration, autofocus, and through focus curves
• Showing optical principles
• Comparisons between monofocal lenses
• Comparisons between EDOF and monofocal+ lenses
• Comparisons between trifocal/moils