tear
Let an agent explain tears and their kinds, relay composition and function from physiological sources, describe emotional crying with research attributed, and route eye or emotional concerns to appropriate professionals.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain tears and their kinds, relay composition and function from physiological sources, describe emotional crying with research attributed, and route eye or emotional concerns to appropriate professionals.
The clear salty fluid secreted by the lacrimal glands that lubricates and protects the eye, in three kinds: basal tears that continuously coat the cornea, reflex tears produced in response to irritants such as onion vapour or wind, and emotional tears shed in response to strong feelings, a response apparently unique to humans; tears contain water, salts, proteins, lipids and antibodies, drain through the tear ducts into the nose, and their deficiency causes dry eye.
What it is for: Protecting the eye and expressing emotion.
It can be explain kinds and composition; relay function; describe emotional crying; route personal concerns.
Distinguishing features
Three kinds
Three-layer film
Immune components
Emotional tears unique to humans
What it looks like
Clear liquid on the eye surface or running down the face.
Physical character
daily basal tear production: about 0.75-1.1 grams
tear film layers: 3 count - lipid, aqueous, mucin
salinity: about 0.9 percent - similar to blood
How it is recognised
Lacrimal fluid
Basal, reflex and emotional tears
Eye discharge and mucus differ; artificial tears are lubricant drops
Related models
is a kind of - in registry terms
is produced by - and accessory glands
protects - and conjunctiva
is expressed through - in emotional tears
In practice
Families and kinds
basal tears
reflex tears
emotional or psychic tears
tear film components: lipid, aqueous and mucin layers
artificial tears as substitutes
Identifiers
MeSH D013666 tears
Standards and regulation
Clinical guidelines on dry eye disease
Regulation of artificial tears as medical products
Failure modes and hazards
Dry eye from insufficient tears
Blocked tear ducts
Agents giving personal medical advice
Stigma around crying
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.tear
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What tears are.
Science.
Kinds
Kinds and composition.
Kinds
Kinds.
- What are basal, reflex and emotional tears, and what are they made of? definition
- Is the question about tears, eye discharge or artificial tears? boundary
Function
Function.
Function
Function.
- How does the tear film protect and nourish the eye, and how do tears drain? definition
- Which entry fits lacrimal apparatus? action
Clinical Eye health.
Clinical.
Dry eye
Dry eye.
Dry eye
Dry eye.
- What is dry eye disease, and how is it managed in general terms? provenance
- Is the user describing eye symptoms, which need an eye care professional? boundary
Other
Other conditions.
Other
Other.
- What conditions such as blocked tear ducts and excessive tearing exist? provenance
- Which references are standard? provenance
Emotion Emotional tears.
Attribution.
Research
Research on crying.
Research
Research.
- What does research say about why humans cry emotionally and whether it helps, with findings attributed? provenance
- Which sources are cited? provenance
Support
Support.
Support
Support.
- When might persistent crying signal a need for support, in general terms? provenance
- Is the user describing distress, which may need support services? boundary
Context Culture and science.
Context.
Culture
Culture.
Culture
Culture.
- How do cultures view tears and crying, from mourning rituals to gender norms? provenance
- Which entry fits crying in culture? action
Science
Tear science.
Science
Science.
- How are tears studied as a diagnostic fluid and in tear film research? provenance
- Which entry fits tear film? action
What the second pass must settle
- Should dry eye and crying be separate primary entries?
- How should physiological references be linked?
- How should research on emotional tears be linked?