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

Angioarchitecture of rabbit iris.

M Ojima, N Matsuo

    Acta Medica Okayama
    |February 1, 1985
    PubMed
    Summary

    This study reveals how rabbit iris vascular networks change between miosis and mydriasis. These angioarchitecture shifts optimize blood flow during pupillary light responses.

    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

    Metacercariae of <i>Lecithocladium</i> (Trematoda: Hemiuridae) species in gelatinous zooplankters from Japanese coastal waters, with information of adult stages.

    Journal of helminthology·2026
    Same author

    Amplitude detection for the focus error in optical disks using a birefringent lens.

    Applied optics·2010
    Same author

    Effect of a speech aid prosthesis on reducing muscle fatigue.

    Journal of dental research·2010
    Same author

    Intensive smoking-cessation intervention in the dental setting.

    Journal of dental research·2009
    Same author

    Relationship of Porphyromonas gingivalis with glycemic level in patients with type 2 diabetes following periodontal treatment.

    Oral microbiology and immunology·2008
    Same author

    Relationship between smoking status and periodontal conditions: findings from national databases in Japan.

    Journal of periodontal research·2006

    Area of Science:

    • Ophthalmology
    • Vascular Biology
    • Microscopy

    Background:

    • The iris angioarchitecture is crucial for regulating light entry into the eye.
    • Understanding vascular dynamics in the iris is key to comprehending pupillary responses.

    Purpose of the Study:

    • To investigate the three-dimensional vascular structure of the rabbit iris.
    • To compare iris angioarchitecture during miosis (pupil constriction) and mydriasis (pupil dilation).

    Main Methods:

    • Scanning electron microscopy was employed to examine vascular resin casts of rabbit irises.
    • The study analyzed iris vascular patterns in both constricted and dilated states.

    Main Results:

    • The iris comprises three distinct vascular layers: anterior capillary, arteriolo-venular, and posterior capillary layers.
    • In miosis, peripheral iris vessels straighten radially, while peripupillary vessels fold; in mydriasis, peripheral vessels become tortuous and peripupillary vessels stretch laterally.
    • The peripupillary region lacks a posterior capillary layer.

    Conclusions:

    • Iris angioarchitecture dynamically adapts to pupillary size changes.
    • These structural modifications are functionally suited to support pupillomotoric activity and regulate ocular blood flow.

    Related Experiment Videos