Meaning & use
Phoria
Last updated
A tendency of the eyes to drift out of alignment when binocular fusion is interrupted, as when one eye is covered.
See it in a sentence
The optometrist tested for phoria by covering one eye and watching how it moved when uncovered.
Uncorrected phoria can cause eye strain and headaches during close reading.
A note on using this word
Used both as a standalone clinical term and as a suffix in words like 'esophoria' and 'exophoria', which specify the direction of the eye's drift.
Words with a similar meaning
heterophoria
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