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 Concept Videos

Conservation of Declining Populations02:07

Conservation of Declining Populations

Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
Health Literacy01:21

Health Literacy

Health literacy is an individual's or a community's capacity to comprehend, receive, read, and use relevant healthcare information and services. The World Health Organization (WHO, 2018) defines health literacy as the cognitive and social skills that determine the ability of individuals to gain access to, understand, and use information in ways that promote and maintain good health. As a result, the WHO helps individuals manage long-term health concerns, participate in preventative programs,...
Focusing of Light in the Eye01:16

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...
Region of Convergence of Laplace Tarnsform01:20

Region of Convergence of Laplace Tarnsform

The Region of Convergence (ROC) is a fundamental concept in signal processing and system analysis, particularly associated with the Laplace transform. The ROC represents an area in the complex plane where the Laplace transform of a given signal converges, determining the transform's applicability and utility.
Consider a decaying exponential signal that begins at a specific time. When deriving its Laplace transform, the time-domain variable is replaced with a complex variable. This substitution...
Region of Convergence01:17

Region of Convergence

The z-transform is a powerful mathematical tool used in the analysis of discrete-time signals and systems. It is a crucial tool in the analysis of discrete-time systems, but its convergence is limited to specific values of the complex variable z. This range of values, known as the Region of Convergence (ROC), is fundamental in determining the behavior and stability of a system or signal. The ROC defines the region in the complex plane where the z-transform converges, which can take various...
Interval and Radius of Convergence01:29

Interval and Radius of Convergence

A power series is a mathematical representation of a function as an infinite sum of terms involving powers of a variable. Such series converge only for specific input values, making it essential to determine the range over which the series produces valid results. This leads to the concepts of radius and interval of convergence, which define where the series behaves meaningfully.The radius of convergence describes the distance from the center within which the power series converges. For a...

You might also read

Related Articles

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

Sort by
Same author

Effects of bismuth subsalicylate and dietary sulfur level on fermentation by ruminal microbes in continuous culture.

Translational animal science·2020
Same author

Corrigendum to "Changes in fermentation and animal performance during recovery from classical diet-induced milk fat depression using corn with differing rates of starch degradability" (J. Dairy Sci. 102:5079-5093).

Journal of dairy science·2019
Same author

Changes in fermentation and animal performance during recovery from classical diet-induced milk fat depression using corn with differing rates of starch degradability.

Journal of dairy science·2019
Same author

Short communication: Field study to investigate the associations between herd-level risk factors for milk fat depression and bulk tank milk fat percent in dairy herds feeding monensin.

Journal of dairy science·2018
Same author

A 100-Year Review: Fat feeding of dairy cows.

Journal of dairy science·2017
Same author

Short communication: Temporal effect of feeding potassium carbonate sesquihydrate on milk fat in lactating dairy cows fed a fat-depressing diet.

Journal of dairy science·2016

Related Experiment Video

Updated: Jun 30, 2026

Bridging the Technology Divide in the COVID-19 Era: Using Virtual Outreach to Expose Middle and High School Students to Imaging Technology
09:55

Bridging the Technology Divide in the COVID-19 Era: Using Virtual Outreach to Expose Middle and High School Students to Imaging Technology

Published on: September 28, 2022

Convergence insufficiency in a rural population.

L D Pickwell, M A Viggars, T C Jenkins

    Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)
    |January 1, 1986
    PubMed
    Summary

    Convergence insufficiency (CI) is less common in rural than urban areas. Its incidence increases with age and is higher in individuals taking medications, suggesting a link to overall health status.

    Area of Science:

    • Optometry and Vision Science
    • Public Health Epidemiology

    Background:

    • Convergence insufficiency (CI) is a prevalent issue in optometric practice, impacting visual function.
    • Understanding the epidemiological variations of CI is crucial for targeted public health interventions.
    • Previous studies have established a baseline incidence in urban populations.

    Purpose of the Study:

    • To compare the incidence of convergence insufficiency (CI) in a rural population with a previously studied urban population.
    • To investigate the influence of age and medication use (as a health indicator) on CI prevalence in both settings.

    Main Methods:

    • A comparative epidemiological study design was employed.
    • Data on CI incidence were collected from rural and urban cohorts.
    • Statistical analysis examined the effects of age and medication status on CI prevalence.

    More Related Videos

    Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes
    08:27

    Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes

    Published on: March 3, 2023

    Intraoperative Video Consultation Following Bile Duct Transection Facilitates Direct OR Transfer for Robotic Hepaticojejunostomy at Tertiary Center
    07:48

    Intraoperative Video Consultation Following Bile Duct Transection Facilitates Direct OR Transfer for Robotic Hepaticojejunostomy at Tertiary Center

    Published on: January 9, 2026

    Related Experiment Videos

    Last Updated: Jun 30, 2026

    Bridging the Technology Divide in the COVID-19 Era: Using Virtual Outreach to Expose Middle and High School Students to Imaging Technology
    09:55

    Bridging the Technology Divide in the COVID-19 Era: Using Virtual Outreach to Expose Middle and High School Students to Imaging Technology

    Published on: September 28, 2022

    Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes
    08:27

    Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes

    Published on: March 3, 2023

    Intraoperative Video Consultation Following Bile Duct Transection Facilitates Direct OR Transfer for Robotic Hepaticojejunostomy at Tertiary Center
    07:48

    Intraoperative Video Consultation Following Bile Duct Transection Facilitates Direct OR Transfer for Robotic Hepaticojejunostomy at Tertiary Center

    Published on: January 9, 2026

    Main Results:

    • The prevalence of convergence insufficiency (CI) in the rural area was approximately half that observed in the urban area.
    • Individuals taking medications represented about two-thirds of the CI cases in the rural sample.
    • CI incidence demonstrated a positive correlation with age in both rural and urban populations.

    Conclusions:

    • Rural populations exhibit a lower incidence of convergence insufficiency (CI) compared to urban counterparts.
    • The higher incidence of CI among medication users suggests a potential link between systemic health and binocular vision.
    • Age is a significant factor influencing the prevalence of CI across different geographic settings.