If the subjective angle differs from the objective angle, you would categorize as which type?

• A. Unharmonious correspondence
• B. HAC
• C. PAC 1
• D. PAC 2

Answer: (A)

When the angle you measure by objective tests (the motor deviation) does not match the angle the patient perceives (the subjective angle), the visual system is not mapping corresponding retinal points in the same way as the motor alignment. This mismatch is called unharmonious correspondence. It reflects a sensory adaptation where the brain’s retinal correspondence differs from the actual motor misalignment, often seen with anomalous retinal correspondence or other long-standing binocular adaptations. In contrast, when subjective and objective angles align, the correspondence is harmonious. The other terms describe scenarios with consistent findings and do not capture this mismatch.