xeroma
Definition
Noun: A medical condition characterized by abnormal dryness of the conjunctiva and cornea of the eyes. This dryness is often due to a systemic deficiency of vitamin A.
Usage
The term "xeroma" is a technical, medical term used primarily in clinical and ophthalmological contexts to diagnose and describe a specific ocular condition. It is not commonly used in everyday conversation.
Examples
- The patient was diagnosed with xeroma, a direct consequence of prolonged malnutrition.
- Xeroma can lead to more serious eye complications if the vitamin A deficiency is not corrected.
- In severe cases, xeroma may progress to keratomalacia, which involves ulceration and softening of the cornea.
Advanced Usage
- The condition is often discussed in the context of public health, especially in regions where nutritional deficiencies are prevalent.
- Xeroma is a key diagnostic sign for hypovitaminosis A (vitamin A deficiency).
Variants and Related Words
- Xerophthalmia (n): This is the more commonly used clinical term for the same condition of extreme eye dryness due to vitamin A deficiency. "Xeroma" is sometimes considered a synonym or a specific stage of xerophthalmia.
- Xerosis (n): A general medical term for abnormal dryness of body tissues, such as skin (xerosis cutis) or eyes.
Synonyms
- Xerophthalmia: The most direct synonym.
- Conjunctival xerosis: A term specifying dryness of the conjunctiva.
- Dry eye syndrome: A broader, more general term that can include xeroma but is often used for less severe or non-deficiency-related dryness.
Notes on Meaning
"Xeroma" refers specifically to the pathological dryness of the eye's surface membranes caused by a nutritional deficit. It is distinct from temporary or environmentally caused eye dryness.
Noun
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abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A
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