StellarVision is a training game that can help children prevent strabismus. It can also assist patients in the recovery period after strabismus surgery. Through different alien planet games, children can train their near and far adjustments and increase their eye's ability to integrate images. Not only can it be played by one person, but there is also a training mode for two people. In addition to following the instructions, children can also play freely and randomly sort different planets to increase freedom and fun in training.