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

Pole and System Stability01:24

Pole and System Stability

359
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
359
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

2.7K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.7K
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

3.6K
Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
3.6K
Magnetic Field Lines01:19

Magnetic Field Lines

4.2K
The representation of magnetic fields by magnetic field lines is very useful in visualizing the strength and direction of the magnetic field. Each of the magnetic field lines forms a closed loop. The field lines emerge from the north pole (N), loop around to the south pole (S), and continue through the bar magnet back to the north pole.
Magnetic field lines follow several hard-and-fast rules:
4.2K
Anaphase A and B01:39

Anaphase A and B

4.1K
Microtubules form through the end-to-end polymerization of tubulin heterodimers. Kinetochore microtubules originate from the spindle poles, and their plus-ends connect with the kinetochores on sister-chromatids. Ndc80 protein complexes, present on the kinetochore, form low-affinity links with the plus end of these kinetochore microtubules.
Plus-end depolymerization releases tubulin heterodimers from the terminal region of the microtubule. As tubulin subunits are lost, the Ndc80 complexes detach...
4.1K
Force Vector along a Line01:26

Force Vector along a Line

539
Quite often in three-dimensional statics problems, the direction of a force is specified by two points through which its line of action passes. Consider a three-dimensional static pole with a cable anchored to the ground.
539

You might also read

Related Articles

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

Sort by
Same author

Investigating the evolution of the Arctic lineage of canine distemper virus circulating in Italy.

Veterinary research·2026
Same author

Detection of lymphocytic choriomeningitis virus (LCMV) in the common house mice (<i>Mus musculus</i>) in Italy: an underrecognized threat to human health.

Microbiology spectrum·2026
Same author

Feline bocaparvovirus in domestic cats with gastrointestinal disease.

Veterinary journal (London, England : 1997)·2026
Same author

Tear Film Interferometry, Meibography, and Optical Coherence Tomography Angiography for Rosacea.

Diseases (Basel, Switzerland)·2026
Same author

Lemon Juice Activity Against Caprine Alphaherpesvirus-1: An In Vitro Study.

Antibiotics (Basel, Switzerland)·2026
Same author

Artificial Intelligence in Neuro-Ophthalmology for Optic Disc Pathologies and Neurodegenerative Disease.

Eye and brain·2026

Related Experiment Video

Updated: Jul 29, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.5K

Pole to pole.

Francesco Pellegrini1, Maria Basciu2, Julie Falardeau3

  • 1Department of Ophthalmology, ASFO, Pordenone, Pordenone, Italy.

Survey of Ophthalmology
|May 19, 2023
PubMed
Summary

Giant cell arteritis can manifest solely as retinal cotton wool spots, even without other symptoms. This finding, alongside visual field defects and stroke, led to a diagnosis of this serious condition.

More Related Videos

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.3K
Magnetic Tweezers for the Measurement of Twist and Torque
11:41

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

23.3K

Related Experiment Videos

Last Updated: Jul 29, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.5K
Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.3K
Magnetic Tweezers for the Measurement of Twist and Torque
11:41

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

23.3K

Area of Science:

  • Ophthalmology
  • Neurology
  • Rheumatology

Background:

  • Giant cell arteritis (GCA) is a systemic vasculitis affecting medium and large arteries.
  • Ocular manifestations of GCA can lead to irreversible vision loss.
  • Early diagnosis and treatment are crucial to prevent severe complications.

Purpose of the Study:

  • To highlight the potential for isolated retinal findings to indicate underlying giant cell arteritis.
  • To emphasize the importance of considering GCA in cases of unexplained visual disturbances and stroke.

Main Methods:

  • Case report of a 67-year-old man with acute visual symptoms.
  • Ophthalmological examination including visual acuity and visual fields.
  • Neuroimaging (CT scan) to evaluate for stroke.
  • Laboratory tests for acute phase markers.
  • Temporal artery biopsy for definitive diagnosis.

Main Results:

  • The patient presented with painless vision loss described as a "dark area" and isolated cotton wool spots in both retinas.
  • Visual field testing revealed an inferior right quadrantanopia.
  • CT scan confirmed a left occipital stroke.
  • Elevated acute phase markers and a positive temporal artery biopsy confirmed giant cell arteritis.

Conclusions:

  • Isolated retinal cotton wool spots can be an early or sole presenting sign of giant cell arteritis.
  • This case underscores the need for a high index of suspicion for GCA in patients with unexplained retinal findings and neurological events.
  • Prompt diagnosis and treatment of GCA are essential to prevent further ischemic events and vision loss.