What does xerophthalmia mean?
Xerophthalmia is a medical term for excessive dryness of the eyes, especially affecting the conjunctiva and cornea. It is most strongly associated with vitamin A deficiency, in which impaired epithelial maintenance can leave the ocular surface vulnerable to damage. If the condition progresses, it may lead to keratomalacia, a softening and ulceration of the cornea that can result in permanent visual impairment or blindness. The word is used mainly in clinical, nutritional, and public-health writing rather than in everyday conversation, where people are more likely to say dry eye. Its importance is both medical and linguistic: the name combines Greek roots meaning dry and eye, making the condition easy to recognize once the components are understood. Recognizing xerophthalmia can also point to a broader problem with nutrition or eye care, particularly in populations where vitamin A deficiency remains a serious concern.
nounA condition in which the eyes become excessively dry, often because of inadequate tear production. It is especially associated with vitamin A deficiency and can lead to damage of the cornea and, in severe cases, blindness.
- Excessive dryness of the eyes, particularly the conjunctiva and cornea, commonly associated with vitamin A deficiency.
"Severe vitamin A deficiency can cause xerophthalmia, leaving the eyes dry and vulnerable to corneal damage."
"Severe vitamin A deficiency can cause xerophthalmia, in which the conjunctiva and cornea become dry and vulnerable to damage."
"The clinician diagnosed xerophthalmia and began vitamin A replacement under a treatment protocol."
The plural is used when referring to separate cases or instances of the condition, although the singular is more common in general medical writing.
"The report documented xerophthalmias in several children with severe malnutrition."
A vitamin A deficiency that causes xerophthalmia can progress to keratomalacia, a corneal condition capable of causing permanent blindness.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of xerophthalmia
Xerophthalmia comes from Greek xēros, meaning dry, and ophthalmos, meaning eye. The medical term developed through the combination of the prefix xero-, indicating dryness, with -ophthalmia, referring to the eye or an ocular disorder. Its formation reflects the familiar Greek-derived pattern of xeroderma, xerostomia, and ophthalmology.
Related word forms
How xerophthalmia is actually used
This is a medical term used in clinical and public-health contexts, especially in discussions of vitamin A deficiency. It is more specific than the everyday expression dry eye and should not be used for ordinary, temporary eye dryness.
Easily confused with xerophthalmia
Xerophthalmia is abnormal dryness of the eyes, whereas xerostomia is abnormal dryness of the mouth.