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

Characteristics of Dry Friction01:21

Characteristics of Dry Friction

Dry friction occurs when two solid surfaces slide against each other without any lubrication or fluid present. It causes resistance when pushing objects along a surface, like a gardener pushing a wheelbarrow. The force applied to move the cart causes dry friction between the wheel and the ground.
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
Frictional Force01:07

Frictional Force

When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
Dry Friction01:30

Dry Friction

Dry friction occurs between two solid surfaces in contact as they attempt to move relative to one another. In daily life, dry friction is encountered in various forms, such as when walking on the ground, sliding an object across a table, or rubbing hands together. Despite its ubiquity, the underlying mechanisms behind dry friction are not readily visible.
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
Kinetic Friction01:26

Kinetic Friction

Consider a truck trying to pull a stationary car. As the truck exerts a force on the car, static friction is created at the point of contact between the two surfaces. This frictional force resists the car's movement and keeps it at rest. However, when the applied force by the truck surpasses the limiting static frictional force, an interesting phenomenon occurs. The frictional force at the interface reduces to a lower value, known as the kinetic frictional force. At this point, the car begins...
Static and Kinetic Frictional Force01:05

Static and Kinetic Frictional Force

One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
Static Friction01:18

Static Friction

Static friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It plays a crucial role in our daily lives, from walking on the ground to driving a car.
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...

You might also read

Related Articles

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

Sort by
Same author

[Effect of a combined physiotherapeutic approach on changes in functional parameters after endovitreal surgery of rhegmatogenous retinal detachment with a favorable anatomical outcome].

Vestnik oftalmologii·2026
Same author

[Diagnostic significance of perimetry and microperimetry in common retinal diseases].

Vestnik oftalmologii·2026
Same author

[Nociceptive and neuropathic pain: impact of the ocular surface].

Vestnik oftalmologii·2026
Same author

[Experimental evaluation of conjunctival reconstruction using a collagen membrane].

Vestnik oftalmologii·2026
Same author

[Morphometric OCT parameters of the lens under accommodative stimulus. Report 1. Assessment of age-related changes].

Vestnik oftalmologii·2026
Same author

[Morphometric OCT parameters of the lens under accommodative stimulus. Report 2. Pilot study of the relationship between changes in the curvature of the anterior lens surface and the biomechanics of the anterior capsule].

Vestnik oftalmologii·2026
Same journal

[Impairment of retinal and choroidal blood flow autoregulation in preeclampsia].

Vestnik oftalmologii·2026
Same journal

[Non-glaucomatous optic nerve atrophy: epidemiology, etiological structure, and clinical diagnostic features].

Vestnik oftalmologii·2026
Same journal

[Microbiota and microbiome of the lacrimal drainage system].

Vestnik oftalmologii·2026
Same journal

[Differential assessment of diagnostic signs of primary open-angle glaucoma and high myopia].

Vestnik oftalmologii·2026
Same journal

[Applied anatomy of the optic nerve].

Vestnik oftalmologii·2026
Same journal

[Epidemiology and diagnostic methods of microbial keratitis].

Vestnik oftalmologii·2026
See all related articles

Related Experiment Video

Updated: Jun 30, 2026

Impression Cytology of the Lid Wiper Area
07:01

Impression Cytology of the Lid Wiper Area

Published on: August 9, 2016

[Friction: the effect on the ocular surface].

N V Sheludchenko1, S E Avetisov1,2, A P Vasilyeva1

  • 1Krasnov Research Institute of Eye Diseases, Moscow, Russia.

Vestnik Oftalmologii
|June 29, 2026
PubMed
Summary
This summary is machine-generated.

This review explores ocular surface friction, detailing how tear film and eyelid interactions affect eye health. Understanding these tribological factors is key to managing dry eye and improving contact lens comfort.

Keywords:
dry eyeeyelidsfrictionocular surfacetribology

More Related Videos

Development of an In Vitro Ocular Platform to Test Contact Lenses
08:28

Development of an In Vitro Ocular Platform to Test Contact Lenses

Published on: April 6, 2016

Effect of Artificial Tear Formulations on the Metabolic Activity of Human Corneal Epithelial Cells after Exposure to Desiccation
06:29

Effect of Artificial Tear Formulations on the Metabolic Activity of Human Corneal Epithelial Cells after Exposure to Desiccation

Published on: May 2, 2020

Related Experiment Videos

Last Updated: Jun 30, 2026

Impression Cytology of the Lid Wiper Area
07:01

Impression Cytology of the Lid Wiper Area

Published on: August 9, 2016

Development of an In Vitro Ocular Platform to Test Contact Lenses
08:28

Development of an In Vitro Ocular Platform to Test Contact Lenses

Published on: April 6, 2016

Effect of Artificial Tear Formulations on the Metabolic Activity of Human Corneal Epithelial Cells after Exposure to Desiccation
06:29

Effect of Artificial Tear Formulations on the Metabolic Activity of Human Corneal Epithelial Cells after Exposure to Desiccation

Published on: May 2, 2020

Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Tribology

Background:

  • Friction in biological systems causes wear and discomfort.
  • The eye's tribological system involves rubbing surfaces (eyelid and cornea) and tear film lubrication.
  • Eyelid movement operates within the hydrodynamic regime of the Stribeck curve.

Purpose of the Study:

  • To review the tribological system of the eye.
  • To analyze friction mechanisms under dry eye conditions.
  • To detail the impact of contact lenses on ocular surface tribology.

Main Methods:

  • Literature review of ocular tribology.
  • Analysis of the "lid wiper" and "brushes" structures.
  • Examination of tear film components and glycocalyx role.

Main Results:

  • Identified key tribological components: lid wiper, brushes, glycocalyx, and tear film.
  • Detailed friction patterns in dry eye conditions.
  • Assessed contact lens effects on ocular surface tribology.

Conclusions:

  • Ocular surface wear and microtrauma are linked to various conditions and diseases.
  • Future directions include advancing tribological analysis in clinical practice.
  • Strategies to reduce ocular surface friction are essential for eye health.