How this works
- Test 1 — Ishihara Plates: Identify the number hidden in each colored dot pattern (10 plates)
- Test 2 — Brightness Matching: Match the brightness of red & green reference squares (5 rounds)
- Test 3 — Hue Discrimination: Pick the swatch that differs from the rest (8 rounds)
- Test 4 — Confusion Lines: Identify which colored shapes blend together (6 rounds)
Important: Reduce screen glare, use your screen at normal brightness, and view from ~60cm away. This is a screening tool — not a medical diagnosis. For official assessment see an optometrist.