Flippers are handheld devices with rotating lenses used in vision therapy that aim to improve focusing flexibility. By alternating between lenses of different strengths, they can help the eyes switch focus between near and far objects more efficiently.
The Brock string is a simple but effective tool for improving eye coordination and convergence. It involves focusing on beads placed along a string, helping train the eyes to work together for better depth perception and binocular vision.
Tranaglyphs are visual training tools that use color-coded images viewed through red-green glasses to improve depth perception and eye teaming. They can help patients with binocular vision disorders by training their ability to merge separate images into one.