Eighth grader Anik Sahai, 14, tests and modifies code controlling a robotic arm, as he polishes the function of an app he created that uses a cellphone's camera to diagnose diabetic retinopathy, an eye disease that is a leading cause of blindness worldwide, in the Science Fair class at A.D. Henderson School in Boca Raton, Fla., Tuesday, April 16, 2024. Sahai's app took first place in the state's middle school science fair and is being considered for commercial use. (AP Photo/Rebecca Blackwell)