Anomalous retinal correspondence (ARC) occurs when:

• A. A reorganization of retinal correspondence in long-standing strabismus to minimize diplopia and maintain some fusion.
• B. A temporary misalignment due to fatigue.
• C. A normal correspondence for near vision.
• D. A surgical procedure to adjust eye alignment.

Answer: (A)

ARC is a neural adaptation that happens in long-standing strabismus. The brain reorganizes how the two retinas map to each other, so a nonfoveal retinal point in one eye lines up with the foveal point in the other eye. This shift reduces diplopia and allows some binocular fusion to be preserved despite the misalignment. It’s a gradual change that develops with chronic misalignment, not a temporary condition like fatigue, not the normal retinal mapping for near vision, and not a surgical procedure. So the description—that ARC is a reorganization of retinal correspondence in long-standing strabismus to minimize diplopia and maintain some fusion—captures the concept.