Chemosis is known as oedema of conjunctiva.
Reason:due to exudation from the abnormal capillaries.This retained exudate gives a swollen and gelatinous appearance.
Regions: loosely attached areas of the bulbar conjunctiva and fornices.
Causes: ABC
A: Acute inflammations like gonococcal conjunctivitis, panophthalmitis, dacryocystitis, periostitis, orbital cellulitis.
B: Blood conditions (abnormal) like anaemia, urticaria, angioneurotic oedema, lymphocytic infiltration.
C: Circulatory obstruction in conditions like pulsating exophthalmos or due to pressure of an orbital tumour which may interfere with the lymph and blood drainage.
Thanks for reading.
Madhuri
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