The term "ophthalmia nodosa" refers to a rare type of conjunctivitis caused by plant material or foreign bodies in the eye. Its pronunciation is /ɑfˈθælmiə noʊˈdoʊsə/, involving the stressed syllables 'o-ph-thal-mi-a' and 'no-do-sa'. The 'ph' is pronounced as an 'f', and the 'th' as a voiced 'th' sound. The 'a' at the end of 'nodosa' is pronounced as a schwa. This word can be difficult to spell due to its unique combination of letters and sounds.
Ophthalmia nodosa is a medical term used to describe a rare condition characterized by the inflammation and nodular formation on the conjunctiva of the eye. The condition is caused by an allergic reaction to the presence of certain foreign bodies in the eye, such as hairs of caterpillars, certain insect parts, or plant material.
When these foreign bodies come into contact with the eye, they may cause irritation, redness, and discomfort. This, in turn, triggers an immune response that leads to the formation of small nodules on the conjunctiva, which is the clear membrane that covers the white part of the eye and lines the inside of the eyelids.
The symptoms of ophthalmia nodosa may include itching, burning, tearing, light sensitivity, and the feeling of having something in the eye. These symptoms can vary in severity depending on the individual and the specific foreign body that caused the reaction.
Treatment typically involves the removal of the foreign bodies from the eye, either by flushing the eyes with water or using fine forceps under local anesthesia. Additionally, steroids or antihistamine eye drops may be prescribed to reduce inflammation and relieve symptoms.
While ophthalmia nodosa is considered a relatively uncommon condition, prompt diagnosis and treatment are important to prevent complications and ensure a full recovery.
The presence of nodular swellings on the conjunctiva, due often to mechanical irritation by the hairs of caterpillars.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "ophthalmia nodosa" is derived from two different components: "ophthalmia" and "nodosa".
The term "ophthalmia" comes from the Greek word "ophthalmos", meaning "eye", and is commonly used in medical terminology to indicate any condition or inflammation related to the eye. It is often associated with diseases like conjunctivitis or inflammation of the eyelids.
The term "nodosa" is derived from the Latin word "nodus", which means "knot" or "swelling". In medical terminology, "nodosa" typically refers to any condition or disease characterized by nodules or nodular formations.
Therefore, "ophthalmia nodosa" specifically refers to an inflammation or condition of the eye involving nodules or nodular formations.