Schematic treatment plan for acquired disorders of convergent fusion
| Treatment of convergent fusional disorders |
| (1) Anamnesis:asthenopic disorders: eye pressure, rapid fatigue in reading, maximal reading duration before blurred vision occurs; decrease in fusional range after visual activities (reading, PC work) |
| (2) Type of treatment: improvement of binocular fusion and stereoacuity by displaying dichoptic images of increasing disparity angle, mean: 12 treatment sessions (range: 8–20, duration: 20–50 minutes) |
| (3) Outcome and follow up: mean increase of vergence amplitude: 12 cm/m; stablility at follow up (10 months), improvement achievable in 80% of the patients |
| (4) Transfer:increase in reading duration, convergent fusion, stereoacuity, and reduction of asthenopic disorders, improved outcome for vocational rehabilitation |
| (5) Exclusion criteria: premorbid fusional disorders, diplopia with angle >15° between both images |