Eye Trainer

A single-file browser app for eye-movement exercises. A glowing dot moves across the screen along different paths; you follow it with your eyes to train tracking, saccades, and focus.

Usage

Open eye-trainer.html in any modern browser. No build step, no dependencies, no server required.

Modes

• Horizontal / Vertical - straight left-right and up-down sweeps.
• Diagonals - two diagonals between the top-center and the bottom corners (a V shape).
• Circle CW / Circle CCW - clockwise and counter-clockwise loops.
• Figure-8 H / Figure-8 V - horizontal and vertical figure-eight paths.
• Saccades - jumps between random points to train quick eye movements.
• Zoom - the dot grows and shrinks in place to train accommodation.

Controls

Keyboard:

• Space - pause / play
• <- / -> - previous / next mode
• up / down - speed
• T - toggle light / dark theme
• A - cycle auto mode-switch (off / 15s / 30s)
• H - hide the panel
• F - toggle fullscreen

Mouse:

• Single click on the background - show / hide the panel
• Double click on the background - toggle fullscreen
• Drag the panel's title bar - move the panel around
• Hide panel button - hide the panel

Settings

Speed, dot size, auto-switch, blink reminder, theme, selected mode, and panel position are saved to the browser's localStorage and restored automatically on the next visit.

Blink reminder

When enabled, a gentle on-screen reminder appears every ~20 seconds to prompt you to blink, which helps reduce eye strain during longer sessions.

License

See LICENSE.