Related Experiment Video
Updated: Feb 2, 2026

05:21
Establishment of A Mouse Model of Aqueous Deficiency Dry Eye
Published on: November 1, 2024
1.4K
Screening utility of a rapid non-invasive dry eye assessment algorithm
Michael T M Wang1, Ally L Xue1, Jennifer P Craig1
1Department of Ophthalmology, New Zealand National Eye Centre, The University of Auckland, New Zealand.
Summary
A rapid, non-invasive dry eye assessment algorithm effectively identifies dry eye disease. This tool shows high sensitivity and specificity, making it valuable for quick diagnoses.
Area of Science:
- Ophthalmology
- Diagnostic Accuracy
- Ocular Surface Disease
Background:
- Dry eye disease (DED) diagnosis can be complex and time-consuming.
- Current diagnostic methods may not be suitable for all clinical settings.
- There is a need for rapid, non-invasive DED assessment tools.
Purpose of the Study:
- To evaluate a rapid, non-invasive dry eye assessment algorithm for detecting DED.
- To assess the discriminative ability of the algorithm's components against TFOS DEWS II criteria.
Main Methods:
- A prospective diagnostic accuracy study included 235 participants.
- Evaluated symptomology (SANDE, OSDI, DEQ-5), tear film breakup time, tear osmolarity, staining, lipid layer, meibum expressibility, and tear meniscus height.
- Utilized the global evaluation component (SANDE, non-invasive tear film breakup time) and subtype classification component (lipid layer, tear meniscus height).
Main Results:
- All components of the algorithm demonstrated discriminative abilities significantly greater than chance (AUC > 0.80).
- The global evaluation component achieved 86% sensitivity and 94% specificity at optimal thresholds (SANDE ≥30, tear breakup time <10s).
- Positive and negative likelihood ratios were 15.0 and 0.15, respectively.
Conclusions:
- The abridged non-invasive dry eye assessment algorithm shows promise as a rapid screening instrument.
- It can be beneficial in resource or time-constrained clinical settings.
- The algorithm aids in the diagnostic process for dry eye disease based on TFOS DEWS II criteria.
Related Concept Videos
Trial and Error and Algorithm
411
A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
411
Dry Friction
986
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...
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
986
Drying Shrinkage
374
When hardened concrete is exposed to air with a relative humidity of less than 100 percent, it begins to lose the free water within its capillaries. As this water evaporates, the water initially adsorbed onto the calcium silicate hydrates migrates towards these now empty spaces and eventually evaporates as well. Over time, as more water leaves, the volume of the concrete decreases, a phenomenon known as drying shrinkage.
A portion of this drying shrinkage can be reversed; if the concrete is...
A portion of this drying shrinkage can be reversed; if the concrete is...
374
Characteristics of Dry Friction
985
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...
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...
985
Muscles of the Eye
4.3K
The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and...
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and...
4.3K
Washing, Drying, and Ignition of Precipitates
6.8K
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
6.8K

