Exercises counteract lazy eye
By Nathan Seppa
An innovative set of eye exercises enables people with amblyopia, or lazy eye, to improve their vision, researchers report.
Amblyopia stems from a youthful eye injury, disease, or defect that induces the brain to “give up” on signals from that eye. A patch over the good eye can reprogram the brain before the age of 8. Otherwise, the brain will remain hardwired to disregard input from the weak eye, scientists have thought. That assumption has come under fire in recent years (SN: 5/14/05, p. 317).