Model of the light sword intraocular lens: in-vitro comparative studies

Area of Science:

• Ophthalmology
• Optical Engineering
• Biomedical Engineering

Background:

• Current intraocular lenses (IOLs) for presbyopia correction have limitations.
• There is a need for advanced IOL designs offering a wider range of functional vision.

Purpose of the Study:

• To present the first models of light sword intraocular lenses (LS IOLs) with angularly modulated optical power.
• To experimentally compare LS IOLs with existing multifocal and extended depth of focus (EDOF) IOLs.

Main Methods:

• Development of novel LS IOL models.
• Comparative experimental study using an original optical bench.
• Analysis of point spread functions, elongated foci, and modulation transfer functions.

Main Results:

• LS IOL models exhibit homogeneous imaging across the designed defocus range.
• Performance was evaluated against commercially available multifocal and EDOF IOLs.
• Key optical metrics including MTF and area under the curve were analyzed.

Conclusions:

• The proposed LS IOL concept provides a promising approach for extended depth of focus.
• LS IOLs have the potential to restore functional vision in patients with presbyopia.
• This technology could lead to the next generation of presbyopia-correcting IOLs.