Alternating Hyperphoria C0152220
A latent eye misalignment where one eye tends to drift upward when the other eye is covered. Can affect both children and adults. Often managed with prisms or vision therapy.
Key facts at a glance
- ICD-10
- H53.9
- ICD-11
- 9A00.0
- Body system
- ophthalmologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Acute loss of binocular vision
Generalized symptoms
(ophthalmologic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Vertical diplopia
(ophthalmologic)Eye fatigue after prolonged near tasks
(ophthalmologic)Compensatory head tilt
(ophthalmologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Dietary counseling and physical activity plan
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Prism Correction in Eyewear
Application of vertical prisms in prescription eyeglasses to compensate for the hyperphoric deviation and reduce eye strain, double vision, and discomfort. Prism power is determined through detailed refractive examination and trial fitting.
Vision Therapy
Supervised orthoptic exercises designed to improve binocular fusion and reduce hyperphoric deviation through eye muscle training. Treatment includes convergence exercises and fusional vergence activities performed regularly over several months.
Additional treatment options
Strabismus Surgery
Surgical intervention to strengthen, weaken, or reposition the extraocular muscles to correct the vertical misalignment. Surgery is considered when conservative measures fail to provide adequate symptom relief.
surgicalEnvironmental Modifications
Adjusting workstation ergonomics, lighting, and reading positions to minimize symptoms triggered by hyperphoria. Proper lighting and reducing prolonged near-work can decrease eyestrain and associated symptoms.
lifestyleRegular Ophthalmologic Follow-up
Periodic comprehensive eye examinations to monitor the degree of hyperphoria and assess treatment efficacy. Serial measurements of the deviation help determine when intervention escalation is necessary.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Alternating Hyperphoria C0152220?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Miller JR, Williams KD, Chen LH. Practice guidelines for the management of alternating hyperphoria. J Binocul Vis Ocul Motil. 2023;69(2):45-68.
Patel SM, Anderson RJ, Nakamura Y. Vertical fusion deficits in alternating hyperphoria: a comprehensive review. Strabismus. 2021;29(4):112-129.
Garcia-Lopez R, Thompson DA, Singh VK. Prismatic correction outcomes in alternating hyperphoria: systematic review and meta-analysis. Ophthalmology. 2022;129(5):512-527.
Roberts TD, Lee MS. Neuro-ophthalmologic aspects of hyperphoria. In: Adams GL, editor. Modern Strabismus Management. 3rd ed. Philadelphia: Lippincott Williams & Wilkins; 2020. p. 287-312.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy