Jove
Visualize
Contact Us

Related Experiment Video

Updated: Oct 2, 2025

Subjective Refraction Test Using a Smartphone for Vision Screening
05:36

Subjective Refraction Test Using a Smartphone for Vision Screening

Published on: October 18, 2024

1.2K

Smartphone-based corneal topography with null-screens.

Oliver Huerta-Carranza, Manuel Campos-García, Victor Ivan Moreno-Oliva

    Applied Optics
    |February 24, 2022
    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

    Evaluation of concave seismic isolator surfaces using LCD null-screens.

    Applied optics·2026
    Same author

    The study of inorganic absorber layers in perovskite solar cells: the influence of CdTe and CIGS incorporation.

    Scientific reports·2025
    Same author

    Image formation through aspheric concave Fresnel-type mirrors.

    Journal of the Optical Society of America. A, Optics, image science, and vision·2025
    Same author

    Evaluation of the aspherical surface of a plano-convex lens by refraction using an LCD.

    The Review of scientific instruments·2024
    Same author

    Modeling, fabrication, and metrology of 3D printed Alvarez lenses prototypes.

    Optics express·2024
    Same author

    Development of a bio-inspired optical system that mimics accommodation and lighting regulation like the human eye.

    Applied optics·2024
    Same journal

    Multifunctional reconfigurable terahertz metasurface based on vanadium dioxide phase transition: achieving broadband absorption and efficient polarization conversion.

    Applied optics·2026
    Same journal

    High-Q-factor electromagnetically induced transparency utilizing quasi-bound states in the continuum in an all-dielectric terahertz metasurface.

    Applied optics·2026
    Same journal

    Automated stitching interferometry for high-precision metrology of X-ray mirrors.

    Applied optics·2026
    Same journal

    Experimental demonstration of an approach to designing a metal-dielectric DBR resonant cavity structure.

    Applied optics·2026
    Same journal

    High-precision wavefront reconstruction from a single-shot interferogram using a physics-driven hybrid feature calibration network.

    Applied optics·2026
    Same journal

    Ultra-high-Q Fano resonance based on coupled topological corner states in Kagome photonic crystals.

    Applied optics·2026
    See all related articles
    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

    This study presents a smartphone-based corneal topographer for measuring the human eye's corneal surface shape. The device demonstrates feasibility and accuracy comparable to commercial topographers.

    Area of Science:

    • Ophthalmology
    • Biomedical Engineering
    • Optical Engineering

    Background:

    • Accurate measurement of corneal shape is crucial for diagnosing and managing various eye conditions.
    • Existing corneal topographers can be expensive and less portable.
    • Advancements in smartphone technology offer potential for developing low-cost, accessible diagnostic tools.

    Purpose of the Study:

    • To design and characterize a compact corneal topographer utilizing smartphone capabilities.
    • To evaluate the performance of the smartphone-based topographer, including distortion compensation.
    • To demonstrate the feasibility of using this device for human corneal surface measurements.

    Main Methods:

    • Development of a compact corneal topographer integrated with a smartphone.

    More Related Videos

    Smartphone Fundus Photography
    05:51

    Smartphone Fundus Photography

    Published on: July 6, 2017

    39.3K
    Using an Automated Hirschberg Test App to Evaluate Ocular Alignment
    05:40

    Using an Automated Hirschberg Test App to Evaluate Ocular Alignment

    Published on: March 24, 2020

    12.9K

    Related Experiment Videos

    Last Updated: Oct 2, 2025

    Subjective Refraction Test Using a Smartphone for Vision Screening
    05:36

    Subjective Refraction Test Using a Smartphone for Vision Screening

    Published on: October 18, 2024

    1.2K
    Smartphone Fundus Photography
    05:51

    Smartphone Fundus Photography

    Published on: July 6, 2017

    39.3K
    Using an Automated Hirschberg Test App to Evaluate Ocular Alignment
    05:40

    Using an Automated Hirschberg Test App to Evaluate Ocular Alignment

    Published on: March 24, 2020

    12.9K
  • Image acquisition using the smartphone camera and lens.
  • Calculation and compensation for optical distortions introduced by the smartphone lens.
  • Surface topography measurements on human corneas.
  • Comparison of results with a commercial corneal topographer.

    • Main Results:

    • The compact corneal topographer successfully measured human corneal surface topography.
    • Distortion compensation algorithms were developed and applied.
    • Measurements obtained using the smartphone-based system showed consistency with a commercial topographer.
    • The proposed method proved feasible for analyzing corneal surface characteristics.

    Conclusions:

    • A smartphone-based corneal topographer is a feasible and accurate tool for measuring corneal shape.
    • This technology offers a potential low-cost and portable alternative to conventional topographers.
    • Further development could enhance accessibility for eye care diagnostics.