angle of anomaly

The difference between the objective angle of deviation, which is the actual misalignment of the eyes, and the subjective angle of deviation, which is the perceived misalignment based on the anomalous retinal correspondence. In harmonious anomalous retinal correspondence, the angle of anomaly equals the objective angle, while in unharmonious anomalous retinal correspondence, the angle of anomaly is less than the objective angle. The angle of anomaly can be measured using the synoptophore with special slides.