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Chemosis is the swelling (or edema) of the conjunctiva. The term derives from the Greek words cheme and -osis, cheme meaning cockleshell due to the swollen conjunctiva resembling it, and -osis meaning condition. [1] The swelling is due to the oozing of exudate from abnormally permeable capillaries. In general, chemosis is a nonspecific sign of ...
Orbital cellulitis commonly presents with painful eye movement, sudden vision loss, chemosis, bulging of the infected eye, and limited eye movement.Along with these symptoms, patients typically have redness and swelling of the eyelid, pain, discharge, inability to open the eye, occasional fever and lethargy.
Subconjunctival bleeding initially appears bright red underneath the transparent bulbar conjunctiva. Later, the bleeding may spread and become green or yellow as the hemoglobin is metabolized. It usually disappears within two weeks. [5] The affected eye may feel dry, rough, or scratchy, but the condition is not usually painful.
The resulting loose, excess conjunctiva may mechanically irritate the eye and disrupt the tear film and its outflow, leading to dry eye and excess tearing. [2] A correlation may also exist between inflammation in the eye and conjunctivochalasis, though it is unclear whether this correlation is causal.
The surface of the conjunctival tissue overlying a pinguecula interferes with the normal spreading of the tear film. The tear ferning test reveals abnormalities of the mucous component of the tear film, making it useful as a predictor of a person's tolerance of hydrophilic soft contact lenses. [ 7 ]
The syndrome manifests as granulomatous conjunctivitis in one eye, accompanied by swollen lymph nodes in front of the ear on the same side. Granulomatous conjunctivitis refers to inflammation of the conjunctiva, the membrane that covers the white part of the eye, characterized by the presence of granulomas, small areas of inflammation due to tissue injury.
Episcleritis is a benign, self-limiting inflammatory disease affecting part of the eye called the episclera.The episclera is a thin layer of tissue that lies between the conjunctiva and the connective tissue layer that forms the white of the eye ().
It is an exudate rich in white blood cells, seen in the anterior chamber, usually accompanied by redness of the conjunctiva and the underlying episclera. It is a sign of inflammation of the anterior uvea and iris, i.e. iritis, which is a form of anterior uveitis. The exudate settles at the dependent aspect of the eye due to gravity.