Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Blur due to pupil area when using progressive addition spectacles

D Burns1

  • 1Department of Optometry, City University, London, UK.

Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
|July 1, 1995
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Outcome and feasibility of radiotherapy bridging in large B-cell lymphoma patients receiving CD19 CAR T in the UK.

British journal of haematology·2024
Same author

Improved outcomes of large B-cell lymphoma patients treated with CD19 CAR T in the UK over time.

British journal of haematology·2023
Same author

Evidence for X(3872) in Pb-Pb Collisions and Studies of its Prompt Production at sqrt[s_{NN}]=5.02  TeV.

Physical review letters·2022
Same author

Measurement of single-diffractive dijet production in proton-proton collisions at <math> </math> with the CMS and TOTEM experiments.

The European physical journal. C, Particles and fields·2020
Same author

Evidence for Top Quark Production in Nucleus-Nucleus Collisions.

Physical review letters·2020
Same author

A Deep Neural Network for Simultaneous Estimation of b Jet Energy and Resolution.

Computing and software for big science·2020
Same journal

Mesopic Illumination in Natural Environments: Implications for Myopia Research.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
Same journal

Axial Length Growth Reference Curves and LMS Parameters for Japanese Children and Adolescents Aged 4-20 Years: The TMM BirThree Cohort Study.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
Same journal

Effect of Switching Myopia Control Strategies on Axial Elongation in Children with Poor Response to Highly Aspherical Lenslet Therapy.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
Same journal

Quantifying the Role of Longitudinal Chromatic Aberration and Age in Night Vision Disturbances.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
Same journal

Impaired Rod-Mediated Vision is the Functional Hallmark of Ageing and Early and Intermediate Age-Related Macular Degeneration.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
Same journal

Analytical Performance, Spatial Dynamics and Clinically Meaningful Change Thresholds for Automated Non-invasive Tear Film Assessment Using the Oculus Keratograph 5M.

Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)·2026
See all related articles

Progressive addition spectacle lenses create blur in the progression zone due to multiple powers. This blur

Area of Science:

  • Ophthalmic optics
  • Visual science

Background:

  • Progressive addition lenses (PALs) are widely used for presbyopia correction.
  • The progression zone of PALs presents a range of optical powers to the eye.
  • This optical characteristic can theoretically lead to visual aberrations.

Purpose of the Study:

  • To mathematically analyze the blur characteristics in the progression zone of PALs.
  • To evaluate the visual significance of this blur.
  • To investigate the impact of peripheral astigmatism on PAL performance.

Main Methods:

  • Mathematical modeling of optical aberrations in PALs.
  • Analysis of the blur function within the lens progression zone.
  • Consideration of peripheral optical power errors.

Related Experiment Videos

Main Results:

  • The blur in the progression zone is mathematically characterized.
  • The visual significance of this blur is found to be minimal, less than previously assumed.
  • Peripheral astigmatism in PALs may negatively affect visual performance.

Conclusions:

  • The blur from the progression zone of PALs has limited visual impact.
  • Peripheral astigmatism is a more significant factor in potential visual performance reduction for PAL wearers.
  • Further research into mitigating peripheral astigmatism in PAL design is warranted.