Memorial Day Offer

Discover your mystery discount!

Rheum

– Genus Rheum – Rheum is thin mucus discharged from eyes, nose, or mouth – Dries as crust in corners of eyes, mouth, eyelids, or […]

« Back to Glossary Index

– Genus Rheum
– Rheum is thin mucus discharged from eyes, nose, or mouth
– Dries as crust in corners of eyes, mouth, eyelids, or under nose
– Formed by mucus, nasal mucus, blood cells, skin cells, or dust
– Known as sleep, sleepy-seeds, eye boogers, Sandmans sand, or eye gunk

– Medical Conditions
– Conditions can increase rheum production in the eye
– Allergic conjunctivitis can lead to considerable rheum buildup
– Pus in heavy rheum buildup can indicate dry eye or infections
– Blinking washes away rheum with tears during wakefulness
– Accumulation of dry rheum occurs in eyes during sleep

– See Also
– Mucopurulent discharge related to rheum
– Presence of pus in heavy rheum buildup indicates infections

– References
– Merriam-Webster defines rheum
– Eye boogers explained by Families.com blog and Today I Found Out
– Shorter Oxford English Dictionary reference
– A Dictionary of Slang and Unconventional English reference
– NBC News article on eye boogers

– External Links
– Look up “rheum” in Wiktionary for more information
– WebMD explains eye discharge and gunk in eyes

Rheum (Wikipedia)

Rheum (/rm/; 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). Rheum dries and gathers as a crust in the corners of the eyes or the mouth, on the eyelids, or under the nose. 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 a cat's eyes

Rheum from the eyes is particularly common. Dried rheum near the eyes is commonly called 'sleep', 'sleepy-seeds', 'sleepy buds', 'sleepy bugs', 'sleepy sand', 'sleepy winks', 'eye boogers', 'Sandman's sand', 'eye goop', 'sleepy dust', 'sleepies', 'eye gunk', 'eye crust', 'sleepy men', 'crusties', 'dozy dust', 'eye globs', or 'sleepy dirt'. 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. A parent or pet owner may notice the collection of rheum on children and pets they care for.

« Back to Glossary Index
This site uses cookies to offer you a better browsing experience. By browsing this website, you agree to our use of cookies.