What is a demonstrated effect of vision therapy on accommodation?

• A. It reduces accommodation velocity
• B. It increases velocity and decreases latency
• C. It eliminates accommodative responses
• D. It causes permanent hyperactivity of accommodation

Answer: (B)

Dynamic accommodation performance can be improved with vision therapy, specifically by making the accommodative response faster and initiating it sooner. The velocity of accommodation is how quickly the eye changes focus, and latency is the time from when a demand changes to when the eye begins to respond. Through targeted exercises, the neural control and ciliary muscle coordination become more efficient, so the eye can adjust faster and with less delay. That’s why increasing velocity and decreasing latency is a demonstrated effect. The other options describe outcomes that aren’t supported by how vision therapy typically changes accommodation; it doesn’t slow the response, erase accommodative responses, or cause permanent over-activation.