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

[Confusion lines in dichromatism using various surface colors].

M Fukuda1

  • 1Department of Ophthalmology, Tokyo Medical College, Shinjuku-ku, Japan.

Nippon Ganka Gakkai Zasshi
|June 1, 1992
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

Poly-N-acetyllactosaminyl O-glycans attached to leukosialin. The presence of sialyl Le(x) structures in O-glycans.

The Journal of biological chemistry·1992
Same author

Shortening of N1 and P3 latencies in event-related potentials observed coincidentally with clinical improvement during nootropic medication in a demented patient: specific effect of nicergoline.

The Japanese journal of psychiatry and neurology·1992
Same author

Chediak-Higashi lymphoblastoid cell lines: granule characteristics and expression of lysosome-associated membrane proteins.

Clinical immunology and immunopathology·1992
Same author

Distributions of the Nd and P300 in a normal sample.

International journal of psychophysiology : official journal of the International Organization of Psychophysiology·1992
Same author

[Short-latency somatosensory evoked potentials in patients with hypertensive intracerebral hemorrhage: clinical availability of N20 component].

No shinkei geka. Neurological surgery·1992
Same author

[Clinical characteristic of elderly patients with insulin-dependent diabetes mellitus].

Nihon Ronen Igakkai zasshi. Japanese journal of geriatrics·1992
Same journal

Guidance of Medical Care for Familial Exudative Vitreoretinopathy：Research on Rare and Intractable Diseases, Health and Labour Sciences Research Grants.

Nippon Ganka Gakkai zasshi·2018
Same journal

Steroid Resistant Vogt-Koyanagi-Harada Disease Treated Effectively with Cyclosporine.

Nippon Ganka Gakkai zasshi·2018
Same journal

The Effect of Low-dose Cyclosporine (100 mg Once Daily) for Chronic Vogt-Koyanagi-Harada Disease.

Nippon Ganka Gakkai zasshi·2018
Same journal

Clinical Classification of Degree of Deficiency in Color Defectiveness: Simulations by Changing the Total Number of Caps or Saturation of Farnsworth Dichotomous Test D-15.

Nippon Ganka Gakkai zasshi·2018
Same journal

Accelerated Epithelial Proliferation in a Rabbit Model of Bullous Keratopathy.

Nippon Ganka Gakkai zasshi·2018
Same journal

Non-infectious Uveitis and Immunosuppressants：Where We Stand and What the Future Holds.

Nippon Ganka Gakkai zasshi·2018
See all related articles

This study on dichromatism found that while neutral points align with previous research, convergence points derived from surface colors differ significantly, especially for deuteranopia, impacting color perception understanding.

Area of Science:

  • Vision Science
  • Color Perception
  • Ophthalmology

Background:

  • Dichromatism, a form of color vision deficiency, affects perception of red-green or blue-yellow hues.
  • Understanding confusion lines, convergence points, and neutral points is crucial for diagnosing and characterizing color vision deficits.
  • Previous research often utilized spectral colors, potentially differing from real-world surface color perception.

Purpose of the Study:

  • To investigate confusion lines, convergence points, and neutral points in protanopia and deuteranopia using surface colors.
  • To compare findings from surface color matching with existing data derived from spectral colors.
  • To analyze discrepancies and similarities in color perception parameters between different stimulus types.

Main Methods:

Related Experiment Videos

  • Color matching experiments were conducted with 8 protanopes and 24 deuteranopes using the Farnsworth-Munsell 100 hue test surface colors.
  • Regression analysis was applied to the cross-points of confusion lines to determine convergence points.
  • Neutral points were calculated and compared with established data.

    • Main Results:

    • Protanopia convergence point using surface colors was found near Pitt and Judd's reported point (x=0.811, y=0.189).
    • Deuteranopia confusion lines showed a steeper gradient, with a convergence point (x=1.959, y=-0.959) located in the lower right region compared to prior studies.
    • Neutral points for protanopia (~495 nm) and deuteranopia (~500 nm) closely matched Judd's findings and were similar to those obtained with spectral colors.

    Conclusions:

    • Neutral points derived from surface colors are consistent with those from spectral colors.
    • Convergence points, particularly for deuteranopia, show significant differences when using surface colors compared to spectral colors.
    • The study highlights the importance of stimulus type (surface vs. spectral colors) in characterizing color vision deficiencies.