H50.52

Clinical Causes: Muscle imbalance: Weakness in the muscles responsible for eye movement can cause the eyes to drift outward. Refractive errors: Significant farsightedness (hyperopia) can contribute to exophoria, as the eyes work harder to maintain focused vision. Hereditary factors: A family history of eye alignment issues increases the risk. Prolonged visual tasks: Activities like reading or computer work can strain the eyes and trigger or worsen exophoria. Neurological conditions: Some neurological issues affecting eye muscles may lead to outward drifting of the eye.

Key Symptoms: Frequent eye strain, especially after close work or screen time Headaches around the forehead or temples Blurred vision or difficulty focusing Sensitivity to bright lights Squinting or closing one eye to reduce double vision Double vision, particularly during prolonged visual tasks Feeling of tiredness or discomfort in the eyes

Diagnosis Path: Optometrists or ophthalmologists typically diagnose exophoria through a comprehensive eye examination. The evaluation may include cover-uncover tests, eye movement assessments, and tests to evaluate binocular coordination. These help determine whether the eye constantly drifts outward or only under specific conditions, and the severity of the misalignment.

Treatment Protocols: While some cases of exophoria require no treatment, persistent or symptomatic cases often benefit from correction strategies. Approaches include: - **Vision therapy:** Customized exercises designed to strengthen eye muscles and improve coordination. - **Corrective lenses:** Glasses or contact lenses, often with prism adjustments, to reduce eye strain. - **Orthoptic exercises:** Specific eye training exercises aimed at improving alignment. - **Addressing underlying causes:** Managing refractive errors or neurological issues, if present. In more severe or resistant cases, surgical options might be considered, although this is less common. Early intervention can often alleviate symptoms and improve comfort.