Meibomian Gland Loss
Meibomian Gland Loss - Related Videos
05:00
Intense Pulsed Light for the Treatment of Dry Eye Owing to Meibomian Gland Dysfunction
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Cited by 41 •
2019
Dry eye disease is an increasingly common condition, which strongly impair patients' life quality. Recently, a new device employing intense pulsed light, specifically designed for the periocular area, has been shown to improve tear film stability and ocular discomfort symptoms in dry eye disease owing to meibomian gland dysfunction.
01:10
Line Loss
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2024
The different configurations of source-load connections include wye (star) and delta connections. The relationship between line and phase voltages and currents varies depending on the configuration. When the source is supplying power, it is transmitted through the wires to the load, and during this transmission, some power is absorbed by the wires, leading to line loss. Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
12:27
Piping Networks and Pressure Losses
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2023
Source: Alexander S Rattner, Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA This experiment introduces the measurement and modeling of pressure losses in piping networks and internal flow systems. In such systems, frictional flow resistance from channel walls, fittings, and obstructions causes mechanical energy in the form of fluid pressure to be converted to heat. Engineering analyses are needed to size flow hardware to ensure...
01:18
Reducing Line Loss
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2024
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this. With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
03:56
Inferior Lacrimal Gland Removal From Rabbit Model: A Surgical Procedure to Remove the Larger Inferior Tear Gland From Rabbit Eye Orbit
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2025
In this video, we describe a surgical procedure to remove the large inferior lacrimal gland from a rabbit model to study the effect on tear production in the animal.
FAQs
Meibum supplies the tear film’s outer lipid layer, which limits water evaporation from the ocular surface. With fewer functioning glands, this protective contribution can weaken, making the tear film less stable and allowing irritation associated with evaporative dry eye to develop. This mechanism links gland integrity to maintenance of a continuously protective tear-film surface.
Structural dropout refers to reduced or absent gland tissue, whereas functional decline concerns how well the remaining glands produce or release meibum. These dimensions can therefore provide different information: morphology may show loss of gland architecture, while clinical assessment helps determine its effect on secretion and tear-film performance. Considering both supports a more complete evaluation.
The measurement adds an anatomical perspective to symptoms and tear-film findings. Clinicians can use gland morphology to support diagnostic assessment, while researchers can examine how gland changes relate to disease mechanisms and possible risk factors. This makes gland-loss evaluation useful not only for recognizing ocular-surface disease, but also for studying why tear-film function deteriorates.
Meibography is used to assess meibomian gland morphology, including the extent of structural reduction or disappearance. Its findings can support diagnosis when interpreted alongside related eye examinations. Repeated assessments also provide a way to monitor whether gland changes remain stable or progress over time, making the technique relevant to both clinical evaluation and longitudinal research.
Meibography focuses on gland structure, whereas related eye examinations place those findings in the context of ocular-surface irritation and tear-film performance. Together, they can support clinical diagnosis and help clinicians judge the relevance of visible gland changes. Using both types of information also strengthens monitoring of disease progression and changes in tear-film function.
Researchers can use measurements of gland loss to investigate disease mechanisms, examine potential risk factors, and evaluate approaches intended to preserve or restore tear-film function. Structural measurements provide an outcome that can be followed alongside ocular-surface status. This helps connect changes in gland morphology with whether an intervention may protect the tear film or improve its stability.