Are there biohacks to improve your eyesight without glasses? hese 5 habits retrain the muscles in your eyes, improve focus flexibility, and lower visual stress so you can actually see better without lenses: 1. Practice shifting your focus from near to far to strengthen the tiny muscles that control clarity. 2. Use TrueDark glasses to block toxic blue light and prevent eye strain. 3. Use red light to recharge the mitochondria inside your retina. 4. Get nutrients like lutein, zeaxanthin, and omega