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

Tangent Line01:26

Tangent Line

466
In differential calculus, understanding how a quantity changes at an exact point is central to interpreting dynamic systems. This can be illustrated by analyzing a car traveling along a winding road. The car’s trajectory is represented as a continuous curve, and the direction in which it moves at any instant is given by the tangent to that curve. In contrast, the secant line, intersecting the curve at two points, captures how the car’s position changes over an interval — an...
466
Nucleosome Remodeling02:54

Nucleosome Remodeling

11.3K
Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
11.3K
Tangent to a Curve01:30

Tangent to a Curve

352
The graph of a function where each output is the square of the input creates a smooth curve that bends upward, becoming steeper as one moves further from the center. At any chosen position along this curve, the curve reaches a certain height depending on the input value. This position can be a reference for analyzing how the curve behaves in its immediate vicinity.To understand the change in the curve near a particular position, imagine selecting another point slightly ahead along the curve.
352
Integrals of Powers of Secant and Tangent01:18

Integrals of Powers of Secant and Tangent

76
Integrals involving powers of tangent and secant are commonly evaluated using substitution, with the strategy determined by the parity of the exponents. The method relies on pairing part of the integrand with the derivative of a suitable trigonometric function and rewriting the remaining factors using trigonometric identities.When the power of secant is even, tangent is chosen as the substitution variable. Since the derivative of tangent is secant squared, a factor of sec⁡2x can be...
76
pH Scale02:41

pH Scale

80.4K
Hydronium and hydroxide ions are present both in pure water and in all aqueous solutions, and their concentrations are inversely proportional as determined by the ion product of water (Kw). The concentrations of these ions in a solution are often critical determinants of the solution’s properties and the chemical behaviors of its other solutes. Two different solutions can differ in their hydronium or hydroxide ion concentrations by a million, billion, or even trillion times. A common means of...
80.4K
Bone Remodeling01:40

Bone Remodeling

40.5K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
40.5K

You might also read

Related Articles

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

Sort by
Same author

[Siderotic Cataract Eight Months After Intralenticular Metallic Foreign Body: A Case Report and Surgical Management].

Klinische Monatsblatter fur Augenheilkunde·2026
Same author

Retinal layer reflectivity and thickness as OCT biomarkers for diagnosis and imaging-based stratification relative to the 4.5-h window in acute central retinal artery occlusion.

Frontiers in neurology·2026
Same author

Pigment Epithelium-Derived Factor From Müller Cells Is Involved in Angiopoietin-Mediated Survival Control of Retinal Neurons.

Investigative ophthalmology & visual science·2026
Same author

Aqueous Humor Biomarkers, Efficacy, and Safety in Patients with Naïve Diabetic Macular Edema Treated with Faricimab: The ALTIMETER Study.

Ophthalmology science·2026
Same author

Opportunities to Improve Management of Neovascular Age-related Macular Degeneration: Communication at Diagnosis and Beyond : Insights from the German nAMD Barometer Survey.

Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie·2026
Same author

[Recurrent spontaneous hyphema assosiated with focal iris vascular leakage-successful treatment with argon laser photocoagulation].

Die Ophthalmologie·2026

Related Experiment Video

Updated: Feb 13, 2026

High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC
11:38

High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC

Published on: May 10, 2016

12.8K

New digital methods: remodelling the harms tangent scale setting.

Martin A Leitritz1, Marvin Bende2, Liane Jiang2

  • 1Section for Experimental Ophthalmic Surgery and Refractive Surgery, Centre for Ophthalmology, University Eye-Hospital, Tuebingen, Germany. martin.leitritz@med.uni-tuebingen.de.

Graefe'S Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie
|March 3, 2018
PubMed
Summary

A new digital tangent screen test is feasible for measuring strabismus angles, showing comparable diagnostic accuracy to the traditional Harms Screen but with reduced examination time.

Keywords:
Ocular deviationsStrabism testingStrabismus angleTangent scales

More Related Videos

A Tissue Clearing Method for Neuronal Imaging from Mesoscopic to Microscopic Scales
07:20

A Tissue Clearing Method for Neuronal Imaging from Mesoscopic to Microscopic Scales

Published on: May 10, 2022

3.5K
Author Spotlight: Use of Fish Scales for Bone Remodeling Research – Advancements in Ex Vivo Imaging and Dissecting Cell Interactions
03:49

Author Spotlight: Use of Fish Scales for Bone Remodeling Research – Advancements in Ex Vivo Imaging and Dissecting Cell Interactions

Published on: May 3, 2024

3.9K

Related Experiment Videos

Last Updated: Feb 13, 2026

High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC
11:38

High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC

Published on: May 10, 2016

12.8K
A Tissue Clearing Method for Neuronal Imaging from Mesoscopic to Microscopic Scales
07:20

A Tissue Clearing Method for Neuronal Imaging from Mesoscopic to Microscopic Scales

Published on: May 10, 2022

3.5K
Author Spotlight: Use of Fish Scales for Bone Remodeling Research – Advancements in Ex Vivo Imaging and Dissecting Cell Interactions
03:49

Author Spotlight: Use of Fish Scales for Bone Remodeling Research – Advancements in Ex Vivo Imaging and Dissecting Cell Interactions

Published on: May 3, 2024

3.9K

Area of Science:

  • Ophthalmology
  • Medical Technology
  • Diagnostic Imaging

Background:

  • Strabismus angle measurement is crucial for diagnosing and managing eye conditions.
  • Traditional methods like the Harms tangent screen test are widely used but may have limitations.
  • Digital solutions offer potential for improved efficiency and accuracy in ophthalmic examinations.

Purpose of the Study:

  • To evaluate the feasibility of a self-constructed, digital-based tangent scale.
  • To compare the digital tangent scale with the established Harms tangent screen test for strabismus angle measurement.
  • To assess differences in measured angles, examination duration, and diagnostic conclusions between the two methods.

Main Methods:

  • A digital tangent screen was developed and compared to the Harms tangent screen test.
  • Strabismus angles of 10 patients were measured at nine gaze positions using both methods.
  • Primary outcome: difference in measured angles; Secondary outcomes: examination time and diagnostic conclusions.

Main Results:

  • The digital and Harms methods showed mean differences of 1.77° (horizontal) and 1.11° (vertical) deviations.
  • Significant differences (>5°) occurred in 13.3% of horizontal and 4.4% of vertical measurements.
  • The digital method demonstrated a reduced median examination time (150s vs. 238s).

Conclusions:

  • The digital tangent screen setup is feasible for strabismus angle assessment.
  • Despite some measurement deviations, diagnostic conclusions were consistent between the digital and Harms methods.
  • The digital approach offers a potential reduction in examination time for strabismus evaluation.