Active focus tool · runs on your device
See active focus.
The thing your eyes do that you've never noticed.
Active focus is the brief moment slightly blurry text sharpens. It's the core stimulus this method trains — and most people don't believe it's real until they catch it themselves.
⊙ Sample — what we're training
Set up your eyes
- Take your glasses off, or wear (about 1 diopter under your normal correction).
- Sit at your usual reading distance from the screen.
- The text below should be just slightly soft — not gone, not crisp.
What you're looking for
The clearing comes on its own — looking, relaxed, not straining. Trying harder makes it worse. Most people miss it for the first few minutes; that's normal. Training dose: about 20 minutes a day, outdoors when possible, for a few months. Not glamorous, very effective.
Why this needs calibration
words
too clear
under-corrected eye
words
★ blur edge
active-focus zone
words
too blurry
past the edge
The calibration step finds your blur edge by feel — back away from the screen until text is just-fuzzy, tap to lock it in. A future version of this tool will read your distance from the camera (no upload — runs locally, like our PD tool) and coach you live.
Your eyes have personal numbers. The free Eyeball Analyzer finds your blur horizon, your differential target, and your daily training plan — about 20 minutes.
Limitations & disclaimer
EndMyopia treats myopia as a refractive state, not a medical condition. This is a free educational tool — not medical advice, diagnosis, or a substitute for a licensed optometrist. Measurements depend on camera quality and how carefully you mark the card edges; expect ±5–10 % on laptops, ±10–15 % on phones. For lens orders, eye health concerns, or any task requiring full 20/20 vision, see a licensed professional.