Hydrodynamics of Blinking

Lateral Shearing Interferometry for Analysis of Tear Film Surface Kinetics

“…6 They suggest a two-step process in which the spread of the aqueous layer with polar lipids is followed by slower spread of the nonpolar lipid layer. These ideas somehow agree with Brown and Dervichian's model, 5 which demonstrates the behavior of two layers: polar and nonpolar, which are pulled by a model eyelid wiper. The polar aqueous layer movement is followed by the slower motion of oil (nonpolar layer) spread over the aqueous layer, dragging along the additional water.…”

Lateral Shearing Interferometry for Analysis of Tear Film Surface Kinetics

“…6 They suggest a two-step process in which the spread of the aqueous layer with polar lipids is followed by slower spread of the nonpolar lipid layer. These ideas somehow agree with Brown and Dervichian's model, 5 which demonstrates the behavior of two layers: polar and nonpolar, which are pulled by a model eyelid wiper. The polar aqueous layer movement is followed by the slower motion of oil (nonpolar layer) spread over the aqueous layer, dragging along the additional water.…”

Estimating Tear Film Spread and Stability Through Tear Hydrodynamics

“…The fluid rise is followed by the slower rise of the thicker lipid layer, a reforming of the tear film, and any disturbance in the thickness of the tear film is evened out by a curvature driven leveling with intermolecular forces acting on the tear film. 51 The tear film spread may therefore be considered to be governed by the viscosity of the tears 42 and the upward drag of the rising tear film. When the lid stops moving, the drag force diminishes while the tear film starts to thin, and eventually either drainage due to gravity or a rising film height reaching the effective range of the dewetting force may be responsible for breakup of the tear film.…”

Deposition and Thinning of the Human Tear Film

“…Thus, the tear film that at late times is perched. Hence, the residue spreading of the oily layer after blinking drags minimal additional liquid into the film, h m R [20] further contradicting the commonly accepted film-formation model (2,9,10). Rupture of the tear film leads to dry patches on the eye This thinning law holds for t ú 100 or t ú 10 02 s. Thus, which clinically has been called the ''dry eye''.…”

Lateral Shearing Interferometry for Analysis of Tear Film Surface Kinetics

“…6 They suggest a two-step process in which the spread of the aqueous layer with polar lipids is followed by slower spread of the nonpolar lipid layer. These ideas somehow agree with Brown and Dervichian's model, 5 which demonstrates the behavior of two layers: polar and nonpolar, which are pulled by a model eyelid wiper. The polar aqueous layer movement is followed by the slower motion of oil (nonpolar layer) spread over the aqueous layer, dragging along the additional water.…”

Estimating Tear Film Spread and Stability Through Tear Hydrodynamics

“…The fluid rise is followed by the slower rise of the thicker lipid layer, a reforming of the tear film, and any disturbance in the thickness of the tear film is evened out by a curvature driven leveling with intermolecular forces acting on the tear film. 51 The tear film spread may therefore be considered to be governed by the viscosity of the tears 42 and the upward drag of the rising tear film. When the lid stops moving, the drag force diminishes while the tear film starts to thin, and eventually either drainage due to gravity or a rising film height reaching the effective range of the dewetting force may be responsible for breakup of the tear film.…”

Deposition and Thinning of the Human Tear Film

“…Thus, the tear film that at late times is perched. Hence, the residue spreading of the oily layer after blinking drags minimal additional liquid into the film, h m R [20] further contradicting the commonly accepted film-formation model (2,9,10). Rupture of the tear film leads to dry patches on the eye This thinning law holds for t ú 100 or t ú 10 02 s. Thus, which clinically has been called the ''dry eye''.…”

Lateral Shearing Interferometry for Analysis of Tear Film Surface Kinetics

“…6 They suggest a two-step process in which the spread of the aqueous layer with polar lipids is followed by slower spread of the nonpolar lipid layer. These ideas somehow agree with Brown and Dervichian's model, 5 which demonstrates the behavior of two layers: polar and nonpolar, which are pulled by a model eyelid wiper. The polar aqueous layer movement is followed by the slower motion of oil (nonpolar layer) spread over the aqueous layer, dragging along the additional water.…”

Estimating Tear Film Spread and Stability Through Tear Hydrodynamics

“…The fluid rise is followed by the slower rise of the thicker lipid layer, a reforming of the tear film, and any disturbance in the thickness of the tear film is evened out by a curvature driven leveling with intermolecular forces acting on the tear film. 51 The tear film spread may therefore be considered to be governed by the viscosity of the tears 42 and the upward drag of the rising tear film. When the lid stops moving, the drag force diminishes while the tear film starts to thin, and eventually either drainage due to gravity or a rising film height reaching the effective range of the dewetting force may be responsible for breakup of the tear film.…”

Deposition and Thinning of the Human Tear Film

“…Thus, the tear film that at late times is perched. Hence, the residue spreading of the oily layer after blinking drags minimal additional liquid into the film, h m R [20] further contradicting the commonly accepted film-formation model (2,9,10). Rupture of the tear film leads to dry patches on the eye This thinning law holds for t ú 100 or t ú 10 02 s. Thus, which clinically has been called the ''dry eye''.…”