- Ocular Health Section
- Research & Innovation
- Fondation Théa
The eyeball can be hurt by infections or allergies. One of the most common threat is conjunctivitis. It is an inflammation of the eye tissue called conjunctiva. The blood vessels of this membrane swell when the conjunctiva is infected. This can cause reddening. Conjunctivitis can occur at any age. Without complications, the conjunctivitis is harmless for visual function. Viral or bacterial infections, allergic reactions, in this review, we will present you the different forms of conjunctivitis and how to treat them.
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The stye is an infection of the implantation area of an eyelash called the "pilosebaceous follicle. It presents itself as a small, red, hot and painful bulge the size of a grain of barley located on the edge of the eyelid and centred on one eyelash. It appears within a day or two then when it ripens, it forms a pocket of visible white-yellowish pus on the surface of the stye.
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Blepharitis is an inflammation of the free edge of the eyelid which can spread to all eyelids. Blepharitis manifests itself by a redness and swelling of the eyelid, with small scabs on the skin and at the root of the eyelashes. It often affects both eyes at the same time, and is accompanied by pain or itching of the eyelids. Other ocular signs are often associated: eye redness, sensations of grains of sand, burning, itching and/or secretions.
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A chalazion is a hot, red, painful lump under or on the eyelid, which appears within a day or two. Its size may be that of a lentil or a pea, or sometimes even an olive. The chalazion may be on the outside of the eyelid and may be seen easily, but it can also be on the inner side: from the outside, the eyelid is simply red and swollen, and the eyelid must be everted to see the chalazion.
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An allergy is a response of the body against an allergen. It is an exaggerated reaction of the immune system against a substance that is not naturally present in the body. The eye as a whole – lids, conjunctiva and cornea can be impact - in direct contact with the environment is more frequently affected by allergic reactions. These ocular allergies occurred frequently - approximately 40 to 60% of allergic people have ocular symptoms - and it’s a burden. Find out what forms those allergies take, what are the causes and how to treat them!
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