These patients should either be retested at another time or simply watched for symptoms of diplopia or headaches with near work. This may be the result of true convergence weakness, but is often found when the patient is distracted, shy, overly excited or does not understand the directions given. ![]() Some patients test in the office as having poor convergence however, they are asymptomatic. Treatment is indicated only in patients with symptomatic convergence insufficiency.ĭuring a routine eye examination, convergence weakness may be diagnosed even without the above-mentioned symptoms. Does every patient who meets criteria for convergence insufficiency require treatment? Presence of any refractive errors, eye muscle dysfunction, or weaknesses in accommodation (near focusing) should also be evaluated. The examiner will also use prisms to measure the degree of outward deviation of the eyes at both distance and near. The examination includes determining the distance from the eyes that the patient can hold the eyes together without double vision (near point of convergence) and the amount of prism that can be placed in front of the eyes at a particular distance before double vision is seen (fusional vergence amplitude). How should a patient be tested for convergence insufficiency?Ĭonvergence insufficiency is diagnosed by an ophthalmologist, optometrist or orthoptist after obtaining a history of the patient’s symptoms and measuring convergence ability. Symptoms can vary with convergence insufficiency and not all symptoms are present in every patient. Patients may be noted to squint or close one eye when reading. Many patients will complain that they have difficulty concentrating on near work (computer, reading, etc.) and that the written words will move around and become blurry after prolonged periods of reading. Symptoms of convergence insufficiency include diplopia (double vision) and headaches when reading. What are the symptoms resulting from convergence insufficiency? Occasionally, a well-controlled intermittent exotropia (outward eye turning) will be present at near and distance in a patient with convergence weakness however, in convergence insufficiency the deviation is symptomatic and occurs spontaneously only when focusing on near objects. ![]() In convergence insufficiency, eye misalignment occurs when focusing at near. What is the difference between convergence insufficiency and exotropia? Typically, one eye will turn outward (intermittent exotropia) when focusing on a word or object at near. Convergence insufficiency is the inability to maintain binocular function (keeping the two eyes working together) while working at a near distance.
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