Which statement about prism adaptation is true?

Which statement about prism adaptation is true?

• A. It is a surgical approach to realign the eye permanently.
• B. It typically yields immediate full correction in most patients.
• C. Prism adaptation refers to gradual improvement in alignment with wearing prisms over time; used for convergence insufficiency or other small misalignments with residual diplopia.
• D. It is only used in pediatric patients.

Answer: (C)

Prism adaptation hinges on the brain and ocular motor system gradually adjusting to the image shift produced by prisms. When prisms are worn, the visual scene is displaced, and the eyes must realign to maintain single vision. Over time—often weeks to months—the neural circuits controlling eye alignment adapt, leading to a gradual improvement in alignment and a reduction of residual diplopia. This is a non-surgical approach, relying on neural plasticity rather than permanent structural changes. It’s particularly useful for small misalignments where there is residual diplopia after other treatments, such as convergence insufficiency or similar tiny deviations. It is not an immediate fix, and it isn’t limited to children; adults can experience the same gradual adaptation.

Prism adaptation hinges on the brain and ocular motor system gradually adjusting to the image shift produced by prisms. When prisms are worn, the visual scene is displaced, and the eyes must realign to maintain single vision. Over time—often weeks to months—the neural circuits controlling eye alignment adapt, leading to a gradual improvement in alignment and a reduction of residual diplopia. This is a non-surgical approach, relying on neural plasticity rather than permanent structural changes.

It’s particularly useful for small misalignments where there is residual diplopia after other treatments, such as convergence insufficiency or similar tiny deviations. It is not an immediate fix, and it isn’t limited to children; adults can experience the same gradual adaptation.