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Definition of Drusen Change5
| Criteria | Increase | Decrease |
|---|---|---|
| Presence of drusen ≥ 63 μm | In ≥2 additional subfields at follow-up | In ≥2 fewer subfields at follow-up |
| Change of maximum drusen size | 63 μm to ≥125 μm; 125 μm to ≥250 μm; or 250 μm to >250 μm in ≥2 subfields | 125 μm to ≤63 μm; 250 μm to ≤125 μm; or >250 μm to 250 μm in ≥2 subfields |
