Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Focusing of Light in the Eye

Focusing of Light in the Eye

Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...

Properties of Enantiomers and Optical Activity

Properties of Enantiomers and Optical Activity

It is essential to understand the difference between chiral and achiral interactions and the implications thereof in optical activity and their applications. Just as our feet, which are chiral, interact uniquely with chiral objects, such as a pair of shoes, but identically with achiral socks, enantiomers of a molecule exhibit different properties only when they interact with other chiral media. An example of a significant implication from this facet is the phenomenon known as optical activity,...

Transformation of Plane Strain

Transformation of Plane Strain

When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...

Deformations in a Transverse Cross Section

Deformations in a Transverse Cross Section

When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...

Stereoisomerism

Stereoisomerism

Isomerism in Complexes
Isomers are different chemical species that have the same chemical formula.
Transition metal complexes often exist as geometric isomers, in which the same atoms are connected through the same types of bonds but with differences in their orientation in space. Coordination complexes with two different ligands in the cis and trans positions from a ligand of interest form isomers. For example, the octahedral [Co(NH3)4Cl2]+ ion has two isomers (Figure 1) In the cis...

Poisson's Ratio

Poisson's Ratio

Poisson's ratio is a material property that indicates their stress response. It explains the connection between the elongation or compression a material undergoes in the direction of an applied force and the contraction or expansion it experiences perpendicular to that force. When a slender bar is loaded axially, it stretches in the direction of the force and contracts laterally. Poisson's ratio is the negative ratio of this lateral contraction to the axial elongation. The negative sign ensures...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Laser spectroscopy and CP-violation sensitivity of actinium monofluoride.

Nature·2025

Same author

A comparative study of target fabrication strategies for microgram muonic atom spectroscopy.

Scientific reports·2025

Same author

Environmental study and stress-related biomarkers modifications in a crew during analog astronaut mission EMMPOL 6.

European journal of applied physiology·2024

Same author

Production study of Fr, Ra and Ac radioactive ion beams at ISOLDE, CERN.

Scientific reports·2024

Same author

Half-life determination of <sup>215</sup>At and <sup>221</sup>Ra with high-purity radioactive ion beams.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2024

Same author

Dynamic complex opto-magnetic holography.

Nature communications·2022

Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026

Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026

Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026

Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026

Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026

Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Jun 1, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Strehl ratios characterizing optical elements designed for presbyopia compensation.

K Petelczyc¹, J Ares García, S Bará

¹Faculty of Physics, Warsaw University of Technology, Warsaw, Poland. krzys137@if.pw.edu.pl

|June 7, 2011

Summary

This summary is machine-generated.

The light sword optical element (LSOE) shows more uniform Strehl ratio characteristics than other presbyopia correction methods. This makes LSOE a promising option for compensating the human eye's reduced accommodation range.

More Related Videos

Sequential Application of Glass Coverslips to Assess the Compressive Stiffness of the Mouse Lens: Strain and Morphometric Analyses

Sequential Application of Glass Coverslips to Assess the Compressive Stiffness of the Mouse Lens: Strain and Morphometric Analyses

Published on: May 3, 2016

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Related Experiment Videos

Last Updated: Jun 1, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Sequential Application of Glass Coverslips to Assess the Compressive Stiffness of the Mouse Lens: Strain and Morphometric Analyses

Sequential Application of Glass Coverslips to Assess the Compressive Stiffness of the Mouse Lens: Strain and Morphometric Analyses

Published on: May 3, 2016

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Area of Science:

Ophthalmology
Optical Engineering
Biomedical Optics

Background:

Presbyopia, the age-related loss of accommodation, significantly impacts visual function.
Existing optical solutions for presbyopia correction, including multifocal lenses and extended depth of focus (EDOF) elements, present various trade-offs.
The Strehl ratio is a key metric for evaluating the quality of optical imaging systems.

Purpose of the Study:

To numerically analyze the Strehl ratio characteristics of the light sword optical element (LSOE).
To compare the LSOE's performance against other established and proposed optical elements for presbyopia correction.
To evaluate the potential of LSOE as a novel aid for compensating insufficient accommodation.

Main Methods:

Numerical simulations were performed using a simplified Gullstrand eye model.
The Strehl ratio was analyzed for the LSOE.
Comparative analysis included bifocal lenses, trifocal lenses, stenopeic contact lenses, and EDOF elements (logarithmic and quartic axicons).

Main Results:

The LSOE demonstrated significantly more uniform Strehl ratio characteristics compared to all analyzed elements.
Other elements showed greater variability in Strehl ratio across different conditions or parameters.
The LSOE's consistent performance suggests improved optical quality for presbyopia correction.

Conclusions:

The light sword optical element (LSOE) exhibits superior and more uniform Strehl ratio characteristics.
LSOE presents a promising new optical solution for compensating the diminished accommodation range in presbyopia.
Further investigation into LSOE for clinical application in vision correction is warranted.