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Zero-phoria at near means your eyes stay aligned when you focus on something up close, like a book or phone screen. It is a measurement from a near cover test or prism testing during an eye exam. For many people, it is a normal finding. You can still feel near strain from dry eyes or focusing fatigue, even with zero phoria.
read more about zero phoria near ...A clinician has you look at a near target while one eye is covered and uncovered. If the uncovered eye has to move to ?pick up? the target, that movement shows a phoria. Prisms can be added to measure the amount more precisely. Results can vary if you are tired or if the target distance changes.
It suggests your eye teaming looks steady at near under test conditions. It does not mean your prescription is perfect or that you do not need reading help. Near comfort also depends on focusing ability and tear film quality. Your clinician may still check accommodation and binocular skills.
Yes. Dry eye can cause fluctuating blur and a ?tired eyes? feeling during reading. Focusing issues can also make near work uncomfortable, even when alignment looks fine. Screens, lighting, and long reading sessions can add strain. If symptoms keep coming back, ask for a near vision and dry eye check.
Get checked if you develop new double vision, frequent headaches with near work, or sudden changes in comfort. A big difference between eyes, new dizziness, or symptoms after a head injury also needs evaluation. If symptoms are mild but persistent, a routine follow-up can help pinpoint the cause. Urgent care is needed for sudden vision loss or severe eye pain.
Yes, many clinicians use orthophoria to mean zero phoria. It means no latent drift was seen during the test.
Yes. Your eyes can align well at distance but show a drift at near, or the other way around. That is why exams often measure both.
It makes convergence insufficiency less likely at that test moment, since convergence insufficiency usually shows an outward drift at near. Still, symptoms can fluctuate, so additional near testing may be needed.
Yes. Fatigue, illness, prescription changes, and head injury can affect alignment. If new symptoms show up, a recheck is a good idea.
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Accommodative and Vergence Dysfunction. American Optometric Association. https://www.aoa.org/AOA/Documents/Practice%20Management/Clinical%20Guidelines/Consensus-based%20guidelines/Care%20of%20Patient%20with%20Accommodative%20and%20Vergence%20Dysfunction.pdf. Date Accessed March 11, 2026.
Near Heterophoria in Early Childhood. PubMed Central. https://pmc.ncbi.nlm.nih.gov/articles/PMC4340430/. Date Accessed March 11, 2026.
An automated and objective cover test to measure heterophoria. PubMed Central. https://pmc.ncbi.nlm.nih.gov/articles/PMC6211723/. Date Accessed March 11, 2026.
Comparison of Four Methods for Measuring Heterophoria and Accommodative Convergence over Accommodation Ratio. PubMed Central. https://pmc.ncbi.nlm.nih.gov/articles/PMC11503332/. Date Accessed March 11, 2026.