Longitudinal Changes in Nystagmus Following Late Treatment for Congenital Blindness.

Sight restoration after prolonged congenital blindness yields significant but incomplete reductions in nystagmus, indicating notable but circumscribed neural plasticity in the oculomotor system beyond infancy.

In addition to demonstrating the feasibility of smartphone-based quantification of nystagmus in resource-limited settings, these results reinforce the importance of early visual input for calibrating eye movements and highlight important paths for rehabilitation.