Red eye

Red-eye means that the eyes are red. This is a general concept. When the blood vessels of the bulbar conjunctiva and sclera tissue are dilated, congested, or bleeding under certain conditions, the eyes may appear red. Due to the different blood supply sources of various tissues of the eye, the red-eye appearance is different, and the reaction lesions are also different. Therefore red eyes are a common symptom common to many eye diseases. The clinical diagnosis should be further specified to understand the conjunctival congestion and ciliary congestion that cause red eyes. Conjunctival congestion represents primary or secondary disease of the conjunctiva or surrounding accessory organs. Ciliary congestion represents a disease of the eyeball itself. Such as keratitis, scleritis, iridocyclitis, and congestive glaucoma. If the blood vessel is diseased or damaged, the bleeding can accumulate under the bulbar conjunctiva, which is called subconjunctival hemorrhage, which is also within the scope of red eyes. Local congestion can also cause red eyes.

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