Rheum - Wikipedia

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Appearance move to sidebar hide From Wikipedia, the free encyclopedia Mucus naturally discharged from eyes, nose, or mouth during sleep For the genus, see Rheum (plant).
Rheum from a cat's eyes

Rheum (/ruːm/; from Greek: ῥεῦμα rheuma 'a flowing, rheum') is a thin mucus naturally discharged from the eyes, nose, or mouth, often during sleep (contrast with mucopurulent discharge).[1][2][3] Rheum dries and gathers as a crust in the corners of the eyes or the mouth, on the eyelids, or under the nose.[3] It is formed by a combination of mucus (in the case of the eyes, consisting of mucin discharged from the cornea or the conjunctiva), nasal mucus, blood cells, skin cells, or dust.

Rheum from the eyes is particularly common. Dried rheum near the eyes is commonly called 'sleep',[4] 'sleepy-seeds', 'sleepy buds',[5] 'sleepy sand', 'eye boogers', 'eye goop',[6] 'sleepies', or 'eye gunk'.[7] When the individual is awake, blinking of the eyelid causes rheum to be washed away with tears via the nasolacrimal duct. The absence of this action during sleep, however, results in a small amount of dry rheum accumulating in corners of the eye.

Medical conditions

[edit]

A number of conditions can increase the production of rheum in the eye. In the case of allergic conjunctivitis, the buildup of rheum can be considerable, preventing the patient from opening one or both of the eyes upon waking without prior cleansing of the eye area. The presence of pus in an instance of heavy rheum buildup can indicate dry eye or conjunctivitis, among other infections.[8]

See also

[edit]
  • Mucopurulent discharge

References

[edit]
  1. ^ "Rheum". Merriam-Webster. Retrieved 11 November 2020.
  2. ^ Amodio, Aimee."Where Do Eye Boogers Come From?" Archived 2012-11-14 at the Wayback Machine, Families.com blog
  3. ^ a b Hiskey, Daven. "What the 'Sleep' In Your Eyes Is", Today I Found Out, 23 February 2011.
  4. ^ Shorter Oxford English Dictionary. Oxford University Press. 2008. ISBN 978-0-19-920687-2.
  5. ^ Eric Partridge, Paul Beale, ed., A Dictionary of Slang and Unconventional English, 8th edition, 1984, s.v.
  6. ^ Nierenberg, Cari (14 September 2011). "Are yours crusty or wet? The truth behind eye boogers (ew)". NBC News.
  7. ^ "Did you know that the real name for eye sleepies is rheum, and it doesn't only come from your eyes?". Office for Science and Society.
  8. ^ "Watery eyes Causes". Mayo Clinic. Retrieved 2025-01-14.
[edit] Wikimedia Commons has media related to Eye rheum. Look up rheum in Wiktionary, the free dictionary.
  • Why Is There Gunk in My Eye? at WebMD
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