What is difference between sclera and conjunctiva?
The sclera is a tough, opaque, fibrous tissue. This connective tissue helps to maintain the shape of your eyeball, while the conjunctiva is a mucous membrane covering the outer part of your sclera.
How can you tell the difference between conjunctivitis and Episcleritis?
The palpebral conjunctiva is normal. Episcleritis is distinguished from conjunctivitis by hyperemia localized to a limited area of the globe, much less lacrimation and no discharge. It is distinguished from scleritis by lack of photophobia and lack of severe pain.
How do you describe a conjunctival injection?
Conjunctival injection or hyperemia is a nonspecific response with enlargement of conjunctival vessels induced by various diseases. Conjunctival injection is an important diagnostic clue for infection or inflammation and can be utilized for the monitoring of the disease progression and response to treatment.
How can you tell the difference between keratitis and conjunctivitis?
Keratitis is inflammation of the cornea, the clear dome that covers the iris and the pupil. Conjunctivitis is inflammation of the conjunctiva. That’s the thin membrane over the white part of the eye and the inner surface of the eyelid. Conjunctivitis is also known as pink eye.
How is the conjunctiva related to the sclera?
The conjunctiva contributes to the tear film and protects the eye from foreign objects and infection. The sclera is the thick white sphere of dense connective tissue that encloses the eye and maintains its shape.
What causes injection of the conjunctiva in the eye?
The conjunctiva is a thin mucous membrane that covers the posterior eyelids (palpebral conjunctiva) and anterior sclera (bulbar conjunctiva). Injection of the conjunctiva is a result of inflammation or infection.
Which is worse scleritis or conjunctival hyperemia?
Episcleritis usually does not threaten vision, but scleritis can destroy vision and the eye. Major symptoms of conjunctivitides (eg, conjunctival hyperemia) are similar. Early, accurate diagnosis is important. Edema of the bulbar conjunctiva results in a diffusely translucent, bluish, thickened conjunctiva.
How does conjunctivitis and episcleritis affect the eye?
Conjunctivitis can be acute or chronic and is infectious, allergic, or irritant in origin. Episcleritis and scleritis usually result from immune-mediated disease. Episcleritis usually does not threaten vision, but scleritis can destroy vision and the eye.